Coaches come in different types, disciplinarians, older brothers/uncles, hands off “that’s his problem” businessmen coaches, and coaches constantly patching up and covering up for their athletes when they do dumb stuff.
The best wrestler to come out of ASU in the past couple decades has a documented baking soda problem. So much so that the AD took action, instead of the Head Coach himself. This is an AD at a school which often contends for the title of the biggest party school in the country. The bar for “moving the needle” on remarkable behavior is very high at ASU.
There is no way you can be a coach and not know about things like “illicit habits” about your athletes. Dudes on the team just talk too much, you spend too much time together, especially when it is your program’s star athlete. Those relationships are 10x closer than with the backups.
For an AD to step in and do something, making the announcement, etc. instead of Zeke, is a reflection of a dynamic that is a coach trying to protect his best kid in the short term (for personal gain), rather than help him in the long term.
Both in High School and college I had coaches who would bend over backwards to patch up, humor, or cater to the “favorite son” on the team. It ruined team chemistry, and ultimately was pretty bad for the wrestler too.