It's not just gaming, people in general seem a lot more decisive these days. It sort of boils down to a lot of people having the mindset of "If you don't agree with me 100%, you're wrong and you're against me and I don't like you, so pick a side"

Also, it's just easier to say "game bad, I'll play something good" than to get into a more nuanced conversation with random reditors you'll never talk to again