Ayuso reminds me of Evenepoel. They're about the same age (Evenepoel a little older), they've had one good GT result very early in their career, and now every GT they enter there's a lot of hype surrounding them but you just know they're going to collapse at some point. Evenepoel's Tour last year was the exception that proves the rule.
I don't know the reason, maybe it's because both of them were so good as juniors that they just won every race they entered and they don't really know how to suffer. Or maybe they just peaked too early. Pogacar was good as a kid but not that good, Vingegaard wasn't even among the best juniors. Maybe that's it.