Most of the stuff I see on my Newsfeed on FB is very strongly pro-vaccination and pro-mask. I very seldom see any anti-vax/mask material, apart from the occasional anti-vax/mask comment by a nutter trying to stir the shit up on pro-vax/mask thread, and I just laugh at those and scroll on by.

I honestly don’t believe my opinion has ever been changed by anything I’ve read on FB any more than it’s been changed by anything I’ve read on forums like this one, no matter how forcefully others try to preach to me. I have 75 years-worth of life-experience behind me and, over those years, I’ve learned to recognise bullshit and bullshitters when I encounter them.