He's not wrong about that at all. There were guys who were rarely used in NXT who ended up doing a lot more on the main roster because Vince liked them better than HHH. Boogs, Elias, Omos, Madcap.
It's a catch 22.
Vince's vision is warped but he will hold down those that actually have some form of legs. As much as folks hate to admit it, Vince is WWE. Trips legit turning the shyt into Ring of Honor with WCW funk, and while I enjoy such things from time to time ..I'm starting to see why gimmicks and goofy shyt matters in the world of professional wrestling.
Without it, it's just work rate with no soul.