Actually it's a pretty deeplt embedded human quality to tell other people to act right, read the room, familiarize themselves with context, otherwise they're gonna do it to thousands more unfortunate people. Pay it forward: tell people to shut up when they have nothing to say. It's not really a big deal, man. There are different social rules when we are in an aggregation space, as in trying to help each other cut the wheat from the chaff informationally, and what you're asking could just as easily be put into search. Since we're on the computer.
tl;dr Lemmy is for being a hater