Hey, you'd be on tilt too if your career prospects had gone from the possibility of a Big Ten gig paying something like 5 years / $25m to possibly getting fired and looking at an upside of coaching somewhere in the G of 5 one way or the other, all in the span of 5 weeks or so. He's in damage control mode now.
I don't think this does WSU any favors, nor does it do him any if he plans to stay at WSU. It gives him an excuse, but I don't think bitching about this after the past 5 weeks is going to lead to any kind of meaningful bump in donations to WSU's collectives. Just not how it works. He would have been better off pushing for this and highlighting the discrepancies in more appropriate settings and at a more appropriate time.
As for the substance regarding NIL, he's not wrong, directionally speaking. Check out the link and those figures he gives. He's saying Oregon State is 10x WSU. I don't know if that's precisely accurate, but I have zero reason to believe it isn't that or even worse. I've donated a decent amount of money to WSU, for athletics and otherwise, but I'm not contributing to a NIL fund. I oppose the principle and I am not going to put money into a futile effort. Sorry.
There simply is no way in hell our fans are ever going to be even close to competitive on this, and there are insufficient businesses and the like in the WSU sphere (realistically, Pullman and Spokane, with Spokane tough due to Gonzaga basketball) that would contribute to the small portion of NIL deals at this point that are legit advertising use cases, along with the tiny/nonexistent market WSU is in. No surprise. All as discussed ad nauseum as soon as NIL became a real thing.
One "good" thing about the Mountain West is that although I understand some schools are ahead of WSU there, too (just look around for articles about some of the donations to Boise State's NIL collective, for instance), and many are better-positioned (certainly in terms of local businesses and advertising opportunities), the numbers there are much closer. Hopefully it never really takes off in that conference. This might wind up being, however, one of the things that gets the Beavs into a better conference without WSU.