You've found some wacky teachers!
I had a teacher, briefly, who didn't seem to like classical at all. He was a jazz man. When I brought some Bach to him he took a disparaging tone "He's just taking this theme and mixing it all up, that's all there is to it". I decided this was a match that wasn't going to work, heh.
Next teacher was pretty open minded about music. Only two complaints - too much coffee! The guy was WIRED, it was hard to keep up. Also had this unfortunate idea that being a musician was an excuse for being late.
Current teacher is very professional, she seems to love it. I'm sure she's heard every piece 100 times, but still is as enthusiastic about it as the student who's learning it for the first time! Only once did I get a glimpse of her political persuasion, which we shelved right away - to get into it might turn the lesson into a long debate/arguement.
It wasn't so much his hatred of Schumann (everyone has their dislikes, even of beautiful music like Schumann's
), as the way he managed to twist every discussion around to it.
Well, I know a few people outside of music who are like that. One friend is quite a curmudgeonly fellow, most discussions wind up moving into his bitter resentment of society at large. An innocent conversation turns to anger at how awful people and the world are

His mind must be circling around that theme most days, finding reasons as he goes to support the disposition... (Having known him for some years, even being roomies for a while, I think the real cause of his misery is a direct result of his irresponsibility. Instead of taking charge, he shakes his fist at the sky.)
My stepmom is good at turning regular conversations morbid. I know a few horny people who direct everything to sex...