ID politics infests this place. Under ID politics logic, there is the oppressor, and the oppressed. The oppressed can only do good, and you can only be good if you are on their side. Otherwise, you are evil. It's an absolutist way of thinking, and most of the users here fall into the trap of thinking this way about everything.

They have simple extended it from politics to lifestyles, to hobbies.

I have been repeatedly harassed and insulted for being a console gamer. God forbid you own a playstation/nintendo and want to play games sitting on your comfy couch. What a ignorant immoral bigoted fool I am! How can I live without the GLORY of Linux gaming at 240fps!!!

I've seen in IRL so much now too. It's not just lemmy. This type of thinking is rampant everywhere now, because it does so well on social media. It's so pathetic and it's totally toxic. And even if you are 'on their side' they turn it into a pissing contest of your purity or something. Everything is also moralized to the point of absurdity.