As is generally the rule with introverts, you don't hear about them. Just because there is a vocal group does not mean they are the true majority. See - anything political where a vocal minority seems to sway the entire discussion.
To OP - Depends on what your threshold is. If you are easily offended and don't let stuff roll off your back, then yes, you will find even the most tiny of offenses to be a huge deal. Are you a non-trad student? There was a poster here a while ago who was an older non-trad who couldn't stand all of the "kids" and their "kiddish ways" in his med school class. Don't be like him.
To VCorp - At least you know you're an ass. It's one thing to say the right answer, but to put down the other person for not knowing it? This is now how I imagine a conversation with you in it to go.
Professor: So class, what nerve innervates the palmar surface of the first 3.5 fingers?
Student 1: Uh, the ulnar nerve?
Professor: No-
VCorp: Uh, no, you're stupid student 1. Clearly it's the median nerve. How did you get into medical school? You're going to be such a bad doctor.