Yeah this is the same program and situation that it was 40 years ago. Brilliant. If you look at Power 5 coaches, only Alabama, Washington, Oklahoma State and Northwestern hired someone without head coaching experience so I don’t think that’s an unreasonable expectation for a program of our caliber.
I think there have been more head coaches than the ones you mentioned who never had prior head coaching experience before leading good programs. Not all are power 5 programs but they are programs with strong basketball traditions, some were excellent coaches who have moved on because of the chance they were given.(those small private schools just can't pay like the large state schools) It's a nice addition to justify hiring a prospect who has been a successful head coach previously but not absolutely necessary if the fit is good. Admittedly it sure makes an easier sell when hiring and also a way to avoid a bigger stink if they don't work out though. Below are a few more who had no prior head coaching experience:
Tom Izzo at Michigan St, Fred Hoiberg at Iowa St, Frank Martin when he was at Kansas St, Chris Mullin at St John's, Patrick Ewing at Georgetown, David Padgett at Louisville (tough circumstances I know), Chris Mack at Xavier, Sean Miller at Xavier, Archie Miller at Dayton, Roy Williams at Kansas, Mark Few at Gonzaga, Brad Stevens at Butler, Jamie Dixon at Pitt etc
Even in the NBA Steve Kerr, Doc Rivers, Mark Jackson, Gregg Popovich etc never had any head coaching experience.
It's a crap shoot. Just think of the ACC alone - BC, Wake, Ga Tech, NC St, etc all have hired multiple coaches with head coaching experience just as most of the more successful programs in the ACC have - but with mixed results. It's hard to find the right fit regardless of conference and even when you do, hopefully you can keep them or worse don't switch from a decent program to a bad one like BC did- not being satisfied with Al Skinner .