There's usually a lot more nuance to the "slightly wrong" aspect. Sometimes it is something minor the person just isn't well-versed in. Then the response seems

There's usually a lot more nuance to the "slightly wrong" aspect. Sometimes it is something minor the person just isn't well-versed in. Then the response seems to be proportional to how big their audience is; the bigger the audience the larger the transgression, the "you should really know better". But then there's also little hints at some more deep-seated issues, things where I'd also find an excuse to leave as soon as possible when I met someone like this in real life. The most common thing I see there is someone considering a group less human because of some arbitrary reason (race, gender, sexual orientation, gender identity), and I don't mean the constant unwilful ignorance fueling microaggressions (I am though one way or another affected by that, they're mostly annoying and rarely uncomfortable enough to end a conversation) but very clear disregard or even disgust for some demographic.