Speaking for me, I downvote comments that are not very good, or rude, or nonsense, or posted by stalker fan bois, known alternate accounts of the usual suspects, suspected alternate accounts of the usual suspects, posts from known whiners, posts from known flaggers, posts that say anything about a source, evidence, or links...basically all leftist, liberal, democrat, rino, and down low leftist liberals professing to be conservatives, posts.
Oh yeah...EVERY LLDRDLLLPTBC+ POST THAT DOES NOT ANSWER A QUESTION and contains several paragraphs of deflection, red herring, straw man, evasions.