Or you could just choose not to be an asshole?

If they meant it as a joke or as sarcasm, they could simply add a /s on the end. Then they would still be downvoted, because it's a pretty thoughtless and dumb thing to say, but at least their intent would have been clear.

I think people on Lemmy actually excel in social skills, especially empathy. They have had it with everyone posting absolute shit and when being called out go "It's just a prank bro". No, stop your dumb shit, it is not acceptable behavior.

Or it is Poe's Law and is not easy to distinguish this type of nuance with so much context information removed (tone of voice, expression, etc) and also there is also the same opinion being genuine for some other person.

Napping, talking trash, and masturbating are all skills. From a certain point of view.