Is it taught that way? Or are students taught to emulate this or that performer because he is "great"? If so, then isn't the prejudice describe something that is being taught? Otoh, if you are teaching listening as above, then you are listening for things even when listening to "great performers" --- what is it that this performer is doing to make it sound great?
I don't know if this makes more sense.
Makes sense. I think I wasn't listening clearly enough initially to what you were saying.

I suspect, though, that there may be confusing elements present like political agendas, personal relationships, media hype, etc. that are also indoctrinated. It is bad taste under any circumstances to like X, who recently caused a scandal with one of our important faculty members. It is good taste under any circumstances to like Y, who happened to have studied or taught in our institution). Etc.
In the case of the old professor who recognized "a Heifetz", I find it rather strange that he would confront the jury with that finding and supposedly blamed them for not hearing the potential. That old professor must have worked with an assistant, so the logical thing to do would be to make a case before the school's management in favor of that "Heifetz" to silently accept that student and "give" him/her to his assistant.
EDIT: I think it is actually very easy to promote or boycott this or that artist among students and the general public.
If you like the artist, you simply call him/her a "genius", and if your students have any doubts, they should first "grow up to your level to be able to judge". Piece of cake to find fragments out of context to make a case, fragments that are then identified in the students' minds as the essence of that "genius".
And the reverse: if you don't like the artist, you simply call him/her "a cultural barbarian", and if your students have any doubts, they should first "grow up to your level to be able to judge". A slighty more convincing variant would be: "You are allowed to do whatever you want, but please don't ever do what X does here.", etc. Success guaranteed. Piece of cake to find fragments out of context to make a case, fragments that are then identified in the students' minds as the essence of that "cultural barbarian".
P.S.: And please don't start me on Kissin's wrong hands, Lang Lang's face-making and Yuja Wang's wrong dress code. There simply can't be anything worth listening to if they do the things they do.
