I rarely unfriend ppl but I like keeping a variety of opinions on hand for any subject that interests me.
That’s my thing: I’ve got a bit of a sociological/anthropological view of humanity. But I wouldn’t ever ask anyone else to do it as it requires extreme suspension of one’s own opinions about many hot button items. A few friends are an extreme test of that resolve but that’s why I keep them. I regularly have friends block other friends and I’ve had a few block me for even KEEPING such friends. But again, that’s my thing. It’s my hobby. Everybody’s got different foci.