Just because someone has their own definition of racism doesn't mean I'm obligated to accept/respect it if it's a stupid, unreasonable definition. Such as likening anyone in this thread to a klansman.
The comments you reference said the PC, attention, and history would be positives. There is no doubt that USC would be lauded nationally. Now, if they think those are the only good things that would come from Dawn being our men's coach, I'm assuming it is because they think she wouldn't do a good job. Based on the history of this thread, I think that would be more in line with sexist views, not racist. But if someone is looking for racism, they'll find it.