Exactly. The swimming fans across the state root against St. X every chance they get because they have a built in advantage over all the other schools. It has nothing to with anything else. I am sure hockey fans think the same of St. I.I would believe that if I heard it directly from them. To take that stance would (I believe) presume they are very weak and themselves racist. I don't buy into that. They like anyone else can take criticism. They can take it from people of any culture. What matters is when delivering and accepting critiques, it be done in good character and honest intent.
A person or organziation that can only accept an opinion as possibly having value because it comes from someone that looks like them, I think has missed a few lessons. You describe your personal experience with the young women from the school. What you described is not someone who has missed those lessons.