It seems like people are getting too worked up (or are mercilessly trolling) on both sides. Here are some facts:
1. NCAA dynasties are both hard to quantify and really hard to do. NAU counts as one; Oklahoma State does too I think, Arkansas also. That's about it. That notably leaves off Stanford and Colorado from recent history, even under legendary coaches. Having a dynasty takes a whole lot of luck.
2. The recent NCAA dynasties preach aerobic development. NAU's training was "leaked" and it included...a whole lot of sub-tempo, tempo, and 10k-based work, with limited VO2 work. Dave Smith said in an interview one time that if someone lived in a cabin and ran however far and fast they felt like for a few months, they'd be two weeks away from any PR. I don't know much about McDonnell's training, but I remember reading about 10 mile tempos that they'd do frequently. Given the context of the 90s, that sounds like aerobic development to me.
3. Tinman preaches aerobic development. Layered intensity aside, his bread and butter workouts are continuous tempo runs, LT intervals, or CV intervals, with various dressing and icing.
4. Tinman has proven to be a (highly) successful coach. What he's done with Hunter could be chalked up to Hunter's talent. What he's done with Hunter, Parsons, Fischer, Austin, and what he's in the process of doing with Thies, Winter, Berriatua, Gusman, Mueller, Medina, and possibly others is undeniably impressive.
5. There is no evidence that Tinman can't coach elite runners. No one would say Hunter is a pretty runner with tons of speed, yet he ran 3:35 as a 20 year old. 3:35 isn't 3:28, but no one is making the argument that 2018 Hunter was a 3:30 guy trapped in Tinman's training. In any event, athletes who have run 3:35, 13:29, 62:06, 2:12--those are elite runners. They're not world class, but they're elite, and no one intellectually honest should say they're not.
6. Tinman has a tendency to self-aggrandizement that undercuts his support and can be counterproductive. Tinman may well be right about his system and training theories, but the way he promotes it can turn people off. He's alluded to it as a Midwest way of speaking. I buy that. The problem is that many people live on the coasts.
7. Much of Tinman Elite's recruiting and promotion appears to be the product of Sam Parsons and Drew Hunter, not Tinman himself. A lot of what turns people off is probably Parsons marketing the group. That means Tinman himself is not at fault for that form of polarization, but also not to be credited with the recruiting that the group does.
So--Tinman is a successful coach going about his training in much the same way as other coaches who are lucky enough to have dynasties, and other successful coaches who are not as lucky. Having a dynasty is a product of a sound system, great recruiting and team-building, and a lot of luck. Tinman has the sound system, and no one should deny that. I'm not sure anyone can reasonably ascribe great recruiting and team-building to Tinman. Hunter fell into his lap, and the rest of the group assembled around Hunter (and Morgan Pearson), and then Hunter and Parsons. I'm sure Tinman was involved, but he probably wasn't the sole factor. As for the luck, just as no one should deny that Tinman has a sound system, no one should deny that one can't just assume that Tinman will have a lot of luck.
Could Tinman build an NCAA dynasty? Sure, maybe. Would he? Probably not.