As someone who actually teaches D1 athletes, I have a different experience.
The areas of concern are usually football, basketball and baseball. Students from all other sports - golf, tennis, track, swimming, diving, gymnastics - are usually straight A students. And not "basketweaving" either. No engineers, but plenty of Finance, Education, Nursing etc. and they are usually excellent students.
Even in Football, some students are clear B students ... smart, dedicated, committed. Of course you have those who could care less about school. Those don't do well (obviously) but, in all fairness, should never have been recruited in the first place. You just know they are going to be a problem.
In business, you recruit folks who have a skillset AND fit into your culture. It's not just about an easy degree. It's about fitting into the culture of Tech and embracing it. (And the same for any other school for that matter.)