My overall take, as an outsider:
1. Tom has been an excellent coach, and that really cannot be emphasized enough. On balance, I was very impressed with how he developed ADS personally and competitively - exceeded my expectations notwithstanding a bump in the road here and there.
2. Iowa is still a fantastic platform from which to operate, even if there are small gaps here and there to plug on the pre-college/college/post-college continuum.
3. Like in many sports, the competitive style has changed to something more offensive-minded, for a variety of reasons. (Just consider, for example, the shift in behavioral incentives associated with the 3 point takedown.) I think some serious soul-searching needs to be done regarding the willingness and ability to adapt. Personally, I think at the end of the day Tom can because...see above #1. But if he's not going to, well...
4. Beyond that, while wrestling is still fundamentally a "hard man's" sport, on the whole, the early technical development and mindset of modern young athletes has changed, and will continue to with NIL (and whatever comes after NIL). Yes, there will always be athletes that respond primarily to the "toughness" message, perhaps even more in wrestling than in other sports. But from where I sit, that's a shrinking pool in an otherwise growing market of talent, which is a hard path to maintaining oligarch status.
5. And beyond that, if you look across sports, that's a coaching model that is fading away, in part because of #4. Consider, for example Mike Babcock and Pat Fitzgerald - hell, we're even going to have a hit piece on a women's basketball coach in the next few weeks that'll probably go down that road. Now to be clear, I don't think Tom has crossed any lines in terms of being abusive toward athletes, and I think he cares about his athletes way too much to ever do so. But the danger is, that line is moving in terms of perceptions.
6. Finally, call me crazy, but while Tom is an incredibly passionate and colorful guy, he sometimes comes across as a little bit unhinged. People notice that.