is it though like really? >6 billion people in the world actively identify with one religion or another but in terms of ratio there are more memes on social media about athesim than religions at least on my AI curated feed

There is plenty of hate speech towards non-believers if you look a little bit for it. In fact, I'd even say that as unfunny and overseen atheists memes are, they are the most tame of all religious critic online.