There's a difference in reaction I think. Two people can hear "I love Atlas shrugged" from a new acquaintance and one would start arguing that it's a bad book and anyone who likes it is dumb, etc. Another would say OK, but will think that the speaker is dumb.

Basically there's no way to find if someone would "tolerate ideas they hate" or not if they refuse to engage with the idea altogether. The second guy in my example looks like he would tolerate these ideas but he won't.