The reverse happens on Lemmy too in some community. Like for example the fairly popular!aboringdystopia@lemmy.world: it's a radical anti-capitalist, probably pro-communist and most assuredly pro-anarchist community, which is generally fine by me. But if you go in there to express a reasonable opinion that isn't "burn all corporations" or "kill all capitalists" and expect to have a reasonable discussion, that's just not gonna happen. You'll just get modded down. It's not so much a place to discuss anything than a big anti-capitalist circle jerk.

So you can find places where people are angry and nasty like on Reddit here, but usually you kind of know in which community you'll find the anger. On Reddit, the anger is everywhere and for no reason, including on subbreddits that aren't the least bit controversial. And even if you don't criticize a product or diss a company or its products, most Redditors are ready to jump at you because... well, they seem to feel the need to be aggressive.

I'm fairly convinced the nature of the platform turns them like that: Reddit is subtly aggressive too and I'm convinced it rubs off on its users.