It's about 90% of the reason I've (largely) stopped using Facebook. Every time I looked at my feed I was being shown some kind of 'drama'. Or if not drama, then a post that poked my own personal beehive so much I'd have the overwhelming urge to step in and say "hang on, what?!" But of course stepping in only perpetuates the drama cycle I hate and I'd end up embroiled in something I didn't want to be a part of, and unhappier for it.
For my own sanity, not scrolling the feed, and only checking in to Facebook for the notifications once every few days seems to have helped immeasurably. And as sad as it is to admit, the FOMO dissipated pretty quickly.
I love the Internet, but the some of the 'social' aspects of it have seemed really ugly for the last few years.