That's the problem isn't it. I do have people that I care about on FB with different views, but they often just share inane memes that are not really grounded in reality. To be fair, I see a lot of trite memes from people I mostly agree with too, though.

I think the "bullshit asymmetry principle" comes into play too: it takes 2 seconds to share some lame conspiracy garbage about how the pope was really born on Uranus or whatever, but in most cases takes a bit more work and fact checking to refute the BS.

With fundamental core values getting different priority, anything that is a well-reasoned argument to one side is nonsense to the other side.