This seems like it’s very prone to selection bias. I don’t think most acquaintances I have would be surprised or cut me off; and indeed, I’ve exchanged comments about passing women with people I’ve only met recently.

But that’s why I think it’s self selection:

- you mention that even from friends you would find it strange and seem to flock with similar perspectives;

- by contrast, I don’t and flock with people who don’t either.

And I don’t particularly see a problem with that — the world is a big place and not everyone needs to be to everyone else’s taste. But like many things, people seem to form cliques.