This is the society we live in. You can either learn from it or hide from it. The only posts I block are the ones trying to sell me crap. Even here, eventually I read posts from people on ignore, if nothing else as a reminder of why.
Along with the outright fake stuff it's also worth it to check the dates on original posts. The algorithms FB uses are particularly bad and so things will appear in the feed that are maybe two or three weeks old, people re-share them, and boom; looks like news. Meanwhile a lot may have changed. Fortunately the wisdom of Carl Sagan never goes out of date.
Bukowski was certainly an interesting chap. Some of my friends with a more nihilistic bent swear by him. I still look to the stars. Got no use for heaven; got no use for hell. Uncertain about Homo sapiens. We still may be just another evolutionary dead end.
It certainly takes a combination of self-discipline and collaboration to minimize, and that's no sure thing either. But it's the best shot we've got I don't know if it's enough. I've come to doubt it. Meh.