I think there are two standards. There are things I won't put up with even in acquaintances like racism, homophobia, sexism, generally being a not nice person, getting involved in endless drama especially when they try to involve me. I just don't even entertain people like that and I won't pretend I like them.
Then there are things I'll tolerate in acquaintances, but I would never be able to call such people friends. Stuff like being flaky, using me as a last resort, being stuck on single issues (only talk about kids/work), being the kind of person who wants a quantity of friends not quality (eg invites a bunch of people to their party even though they barely know them/tries to show off how many instafriends they have or whatever), not understanding that I don't need many people and am not available at the drop of a hat, being immature etc etc. If they do those things, we can still hang out, have a cuppa, maybe they're a laugh in some ways, but we'll never be actual friends, and that's ok. I just wouldn't trust them or confide in them or rely on them.
Even though I'm a massive lefty/feminist, I don't really care about other people's political leanings as long as they act like decent people and are willing to have some banter about it without taking it too seriously. My parents in law are seriously awesome people and they are as righty as they come.