How to fight social media nonsense without losing friends?

[Zakholland7701]

I find myself not saying anything on Facebook at all, because if I do, people will turn away from me.

For example, I saw a post today about Ninawa Pai da Mata (the famous Kaxinawa leader) getting vaxxed (whether it's true or not - but he doesn't speak English so I guess he's not exposed to anti-vax stuff). An animated discussion in the comments.
I wanted to add to the discussion, but I knew if I did, 90% of my friends are anti-vaxxers and might not want to see me anymore.

You may wonder, why are my friends like that? Because they're aya people; otherwise I wouldn't have met them. When you drink, that's the kind of people you meet...
Still, I love them. They're great people, just misguided and brainwashed.

I've interacted with people on the Nexus who may be followers of science, but are arrogant sometimes and when they are, I'd rather not interact with them.

I frequently experience that tension. You don't have to share everyone's viewpoints in order to care about them, but you also don't have to keep quiet at their expense. Sometimes it's sufficient to simply decide when and how to participate not correcting, not arguing, just remaining human and grounded. It's already doing something to love others while keeping your own core intact.