Well, if you haven't met them, I guess they must not exist.
If the Sooners are a professional team, then they will be in the same category as the Thunder (or perhaps more aptly the OKC Dodgers--a minor league team). Students won't have seen the players on the oval or met them in classes. They'll just be paid players like the Thunder and the Dodgers
And actually virtually every non-sports fan I ever met at OU had no use for gamedays. They're a pain in the neck if you're not a fan (or a server in a local bar or eatery). It's your turn to try to be reasonable.
People pick OU and other schools for the sports now because it's college sports, which has historically had a culture that has differed greatly from professional sports. If and when it becomes professional sports, which is what we're discussing, that difference, that thing that makes college sports special, won't exist.
And you're wrong about the academics. I don't know when you graduated but over the past 10-15 years, OU has made great strides academically--including with student athletes. And I'm not cooking any numbers--I got them directly from OU. Not every college student, athlete or no, is going to going to pursue the most challenging and strenuous of academic disciplines, but that doesn't mean they don't benefit from the experience. I graduated with BFA in theatre, for pete's sake, and though I got nowhere as an actor, my time at OU was very beneficial to me and my "lesser" degree has in no way held me back in my professional life.