I personally haven't found that to be true in the tone of people's posts in general, but I also don't give a shit about downvotes if that's what you're referring to.
Nope. Talking about crap like this which is a very tame example. Just using it as its the most recent. This kind of crap is a constant here on smaller more toxic reddit.
Look at that holier then thou, virtue signaling bullshit response to an obvious joke lol
It's because there's a higher proportion of ridiculous, stupid people on lemmy who genuinely believe dumb shit like "I hope humanity destroys itself" so it's hard to see when some things are a joke.