Look at Josh Allen this year ...
Running game isn't really there and defense is either great or offline. They are under 500.
I'm not blaming that on Allen.
Putting a team on your back is only a thing if the other guy isn't "also" the guy ... and most teams have a psychological component that goes unmentioned. Bills have not recovered from that loss to the Chiefs with 17 seconds left (2021?) ... Chargers haven't recovered from giving up that lead in Jacksonville.
Being the financial beneficiary of his arm I have to come to his defense. It's not on Herbert.