The only reason I ever opened a personal FB page is that one employer I temporarily worked for (an independent) required me to have a page. This person is obsessed with social media, then and now. She even told me so when interviewing me, which should have been a big clue to why she and I would never get along (and which we didn't). My stupid personal page is still up there, and I never, ever contribute to it. The only people who post on it are others, the vast majority of whom I don't even know, and most of whom are extreme Lefties. One of these days I'll get around to taking it down.
I think there are a lot of FB "users" like me: In some cases (unlike me), they actually wanted to open a page, but eventually got tired of has-been FB and all the commercial nonsense/exploitation associated with it, even without the totalitarian politics. So what they did was leave a largely unused page in circulation. In fact, the only people I know who still actively use their accounts are extreme Lefties (as I said above). These people are very politically active (several in my own birth family, for example). For them, FB and all social media is their Bible. That is, what they post is "Truth," absolutely. It's an illusion that it's Truth because there is zero disagreement. Everyone who comes to their page "believes" as they do, and thus naturally all of the posts are "absolute Truth."