That might have been an isolated incident, but I do feel the manner and respect some of these schools display speak volumes about the schools. When we applied a couple of years ago, we remember both being very positively impressed by some and being very negatively shocked by (equally famous) others. On the positive side, the interviewer was genuinely interested in getting to know about the kid’s interests. The best interviewers seemed teachers or educators, in our experience.
As for the opposite, I can list a few distinct types: (a) those who would cut off and start asking a new question the moment the kid started answering (why did u ask if not interested to hear the answer?); (b) Those whose sole question consisted of “what other schools are u applying? Name each and every one!” (the moment the kid named a rival school, one interviewer went “berserk” throwing diatribes. the kid said never in his life the venerable school looked so small.); and © Those who were simply tired and uninterested. (10 min interviews). These tended to be either professional “AOs” or alumni interviewers in our experience (but never teachers). They simply crushed the esteem we held about the schools and cast doubt on the fairness of the process: they seemed only interested in protecting their yield, going through the motions to go home, or they have already filled their entering class. This was quite a surprising experience. I took a consolation from the fact that none of them were educators.