I think it's plain to see that:
1. Ben can identify talent, including talent that requires a skilled eye to locate.
2. His teams get better as the season goes on.
Those two things tell me he's got what it takes to be a coach.
That said, I don't think it's in his personality to be a CEO. Can he locate the best assistant coaches? Maintain and expand connections to other assistant coaches and head coaches to develop a "bench" of prospective replacement candidates? Work the high-net-worth community and business community to fund a competitive NIL fund? And so on.
If the AD could shoulder the CEO part, I think he can shoulder the coach part effectively and successfully. ...But if we're counting on Ben to, for example, solve the NIL problem by himself, that's not going to happen. He's not PJ (who most certainly IS a CEO) -- and to be fair, few are: I don't think Ryan Day has what it takes to really be a CEO, but he's in an environment where that's not needed.
We need to put Ben in an environment where he can be a coach without being a CEO. ...Or we need to locate a candidate than can be BOTH.