I posted this before, but look at Brock Purdy with four good but not great years starting against elite teams. Then look at Trey Lance with one elite year playing against FCS teams. Experience counts for something.
The unfortunate thing is that there is no longer time for QB’s to grow up in the NFL before having the weight of mostly bad teams thrown in their laps.
Factoring in less practice time, both in the off season and regular season and many of these kids are doomed to fail before they ever see game action.