The talent they do have that's under 35 (Montez, Carmelo off the top) are doing nothing of note on the main roster, stuck on NXT, or they're running on a hamster wheel (Bron Breaker). Crazy how they're relying on 40 year olds instead of building their young guys up who are much more likely to be available physically in 5 - 7 years.
Good thing about the Monday Night Wars is that it forced Vince to concentrate on the young talent and it paid dividends. To his credit, he never had much issue with heavily pushing "the future." Hell, sometimes, it was to their initial detriment (Reigns).