People do have some misconceptions about this. If you pay attention, it is clear the Gods are already here. Anyone who participates with the God rituals regularly would feel this and understand this by this point.
The Gods returning does not mean they will come here with spaceships to rectify all our problems for us, that was never claimed either, it was a conjecture people made on their own because this is the extend by which their mind can imagine what this looks like.
The presence of the Gods is increasing every day as well, so things will become more obvious with time. For now however, if you do God rituals regularly, you'd know the Gods are literally here right now.
For example, Asclepius literally returned to Earth and was clearly felt by many of us, directly present, to heal the people who did rituals to him. He is still here, in very direct presence.
Because of what Gods are, they do not have to be physically here to be present. They aren't limited to this level of being.
It has been 2000 years since official rituals to Them have been done. There is a Temple to Them on Earth once again. Anyone who is with the Temple of the Gods and follows their teachings will feel them very clearly and know clearly they are here.