At what point does the university "own" the player? Sure, you do not want them riding motorcycles. But longboarding? Griner could have broken her wrist falling down stairs. Just because Baylor provides her with a scholarship does not mean they "own" her or have the ability to regulate every single aspect of her life. As long as she complies with NCAA eligibility requirements and the Baylor code of conduct, I do not fault Griner for being a college student/young person and wanting to have fun. So much of her life is regimented between school and basketball as it is. Yes, it is the price the student-athletes pay for their scholarships and free education. But there is a line.
ETA: Had to look up "longboarding," as I thought it was a surfing activity. If it is skateboarding, I can see easttexastrash's concern a bit more readily, but I maintain that the school cannot regulate every activity of the player's life, outside of NCAA requirements and the student code of conduct for the university.