Sometimes it's misinterpretation. When a post attacks something - doesn't have to be billionaires, it can be anything - calling out a sloppy argument or a low-effort anger dump doesn't go well. In a crowd full of pitchforks and torches, if you aren't jumping up and down waving pompoms for the attacker then anything you say is going to be taken as defending the target - you're an apologist or you're a shill for Evil. Supposedly we're all about Justice, but if the accused is a known Bad Guy the crowd doesn't really GAF if they're innocent in this one case, they're guilty anyway and holes in the argument don't matter. If your own sense of justice doesn't let you go along with the angry mob always being right, you're better off just staying out of those threads.