If people followed that there would be no problem.
Unfortunately, the downvote button is mostly used as an “I disagree” / “I don’t like your opinion” button.
Vice versa, I think Reddit upvoted a lot of the same old boring memes/jokes with the idea that maybe they would benefit if they get there first then next time.
Any post related to WWII, Top comment: “I did nazi that coming” 10,000 upvotes.
It’s not that bad on Lemmy but I have noticed an up tick in non helpful very unoriginal jokes in threads with serious topics.