I think each and every criminal offense must be judged individually. In this case, and I felt the same way with MM... this justifies immediate dismissal. There are problems like PI, store theft, simple assault... which qualify as lesser charges, to me, that would warrant less serious penalties from the school/staff.
Any charge/offense, if proved, that potentially could result in someone's serious injury or death should be cause for getting kicked off the team. Over the years, athletes have many times been given preferential treatment. Some have a sense of entitlement. Whether Mr. Moreno is a good kid, from a nice family, or anything else is immaterial.
This likely ends up with some trivial penalty from the school/coach. What I think means very little, but I would feel the same even if it was a Hawkeye wrestler.