That is also a religion and the same people behind the Knights Templar are behind it.
It marks all of the boxes of a religion, and an Abrahamic Religion at that.
There's an object of worship, there are regulations, there is collective guilt-tripping and its practitioners will try to utterly obliterate you if you step even so slightly across the line
You can't literally believe in nothing so there's that. If you don't worship god then you still need to have something like anime, comic books, movies etc to latch onto as a guide. So at the end there will be people who claim that there is no god and then they flip back and fall into the same scam by worshiping things like Hitler or transexuals.