I don't harbor any ill-will towards Zuckerburg. He didn't do anything (create a mega-rich company and become a billionaire) that we wouldn't do, given the chance. I mean, you have to hand it to him, somewhat. The American Dream and all...
Has FB gone off the rails? Sure? Is it still being used for good, by some (my old auntie) yes. Spreading divisiveness, you bet, but only to and for people who refuse to ever check facts.
If you believe everything you read and hear, on EITHER end of the spectrum (left or right), then you are the sucker.
FWIW, I lean heavily to the right, but I know that a lot of "news" from either end, is crap.