On top of the others' points, I'll provide some insight as someone with personal experience, too.
The Phantom Stranger said:
...and they don't have race mixing issues...
Although mostly true, I personally think it's not looking good at the moment as a result of the influx of foreigners coming here after the country reopened for travel again.
The younger generation has a bunch of insecure girls who have an obsession over foreign (Western) men, especially French because of some weird fantasies depicting every single Western country as top class chique rich places and superior in every way to Japan. From the accounts of a friend of mine who knows plenty of these types of girls, she says many of her friends go and date them just because they're White, without even being able to interact with them. This happens in other Asian countries, too, especially Southeast Asia.
Conversely, there's a genre of guys that specifically go for White women because they're thought to be more attractive or open to sex than the sexually reserved/repressed Japanese. At least in Tokyo, not sure about other cities or prefectures. Korea seems to have this issue, too.
Karnonnos once talked about the subject of how K-pop has ruined people's image of what is considered "beautiful" looks for a woman, resulting in mass insecurity as per beauty standards. Yes, indeed. Japan copies Korea, so I see girls underweight to the point you could grab around the entire waist with one hand, all the time. They also all copy fashion trends, because they think they need to to feel pretty, so you see a bunch of girls wearing the same clothing, with the same hairstyle, etc.
Social media has absolutely destroyed people's minds. Go on a train at any time of the day, on any day of the week, and at least 60% of the people are on their phones. If they're a girl, they're on Instagram or TikTok. I'm not joking, I count all the time. It's about 7 out of 10 people who are on their phones, if they're not sleeping.
Then there's the work culture. Go to Ikebukuro or Shinjuku on a weekend night and enjoy side stepping literal vomit and people passed out on the ground from drinking alcohol as a form of escapism from overwork. Employees are forced to attend these company-hosted parties as a form of etiquette, and face punishment when they do not.
Ol Argedco Luciftias already mentioned the declining birth population as well as suicide rates, so I don't need to, but I can definitely confirm I've been late several times because of somebody killing themselves on the train tracks. Usually happens in the morning when everyone is heading to work or elsewhere, causing major delays on every train line because they have to call in all relevant staff, clean up the mess, transport the body, etc. all within MINUTES. I've witnessed them carrying a body out of the station on a stretcher, before.
They work so much that they don't have time to tend to their family or wife (if they have one), resulting in the infamously high infidelity rates as well. They don't even have to be a company worker, could just be a young couple too, and the same issue applies. Cheating is considered normal here, and always the guy's fault. Loneliness and depression ensue, also because mental health care doesn't exist, especially not for men. I saw one, though, and that's good news, but...
Which leads to the surgically targeted attack on masculinity. There are many, MANY "women-only" establishments ranging from sports facilities, clinics, living environments, even a whole train carriage in the morning. Cause of men having been subliminally abused as a result of the insidious adult entertainment industry.
They're insecure to begin with, and then porn plays upon sexual repression even more, turning people into perverts, but ultimately society blames MEN and spread the idea that all men are like this by default.
There's gambling parlors, porn DVD shops, "Girls bars" everywhere you go, where men pay at least 30 - 50 dollars just to TALK to a woman, because of the level at which masculinity has been obliterated. Hell, when you walk into a convenience store you see erotic magazines of girls in HIGH SCHOOL uniforms. I know there's a concept cafe (place where girls serve you in outfits of a certain theme), where they dress up as KINDERGARTNERS. And it's considered normal.
Why do you think the #1 most popular genre in porn here, is literally fictional minors? And #2 or 3 is cuckoldry? Masculinity is GONE.
Also, the amount of misandry (sexism against men) I've witnessed is insane, the worst I've seen in comparison to every single country I've been to. Society purposely portrays women as untouchable queens, and it encourages such an ego, too. I've seen girls act completely disgusted at a man just standing, sitting, or walking near them, or when they try to ask them something. Meaning, men become even more hesitant and reserved, in fear of punishment.
I've even personally witnessed a case where a man was denied genital health inspection because the specialist for the day was a woman, and only female patients were being accepted as a result, for some reason. Guy had an STD and wasn't allowed to get it checked. Imagine.
Did you know that there are only 2 toilets in restaurants or other places, 1 of them for women, and the other for men AND women? No urinals except for at the station, for the most part. Also, if an event or such gets crowded, they start allowing women to use the men's room, but you can forget about the other way around in any scenario. I've been in restaurants where there were only men at the time, and they had to line up because they weren't allowed to enter the other remaining toilet when the 1 toilet was occupied. I also once saw a sign at an arcade where men couldn't enter the photo booth without the accompaniment of a woman.
There's a massive fissure between people when it comes to social interaction, as a result of everything I mentioned. You know it's bad when there are posters in subways literally TELLING you to fucking help somebody if they're looking sick or off in some way, have collapsed, or look like they're heavily troubled / contemplating things. Most people are too shy to reach out, or fear reprisal because of how emotionally pent-up people can be. I personally have had people lash out at me when I actually tried to help them, too.
Anyway, I could write a goddamn book, and I've spoken on some of these things before. So yeah, resistance, my ass, unfortunately. Maybe in the past, but to think we went through history quite powerfully, only to birth this pathetic and sorry of a society is relatively discouraging, to put it lightly.
Just cause we have "no" jews, and maybe cool high-tech toilets, doesn't make this place paradise. This country's society right now is
fuuuuucked. Most people outside Japan forget about the reality of this place beyond just anime and sex with Asian girls.
Thanks for reading, hope this provided some insight.