my theory is that people don't have a high enough mental bandwidth to be mad at and or care about more than one thing because it's literally just permanent rage bait.

Say what you want about the facts of the situation, but you can't deny that most of the posting is just rage bait.

TL;DR stop being mad about things and care about stuff that's actually important to you. It says your mental bandwidth for more important things, like making funny memes. Instead of just being mad.