Interesting to hear you mention it, I watched it just a few days ago.
I personally loved it. I'm a huge fan of horror done right. But the core factor here is that it puts "god" in a very negative light and points to the fact that what people see as a deity might not be that — but a malevolent spirit.
The video is very unnerving, and I couldn't finish it the first time I saw it.
I loved it. Coolest short I've seen.
It inspired me to make a little old style horror game on the subject of finding out yhwh's true nature but as it turns out game development is quite boring to me so I dropped it.
I did even buy RPG Maker for the occasion.
I have so much else to do anyway.