Bagent has this bizarre habit of leaning backwards as he throws, like he's reclining in a couch or shooting a fadeaway. I think it might be literally every throw.
You could say 'maybe he was feeling the pressure in his face' or 'well he was dealing with bad snaps.'
But watch the throw at 0:30. Perfect snap, Vikings only rush 3 into max protect so he has literally no one within 15 feet of him. He still does it.
0:48 and 1:27 are his best throws and it's not as egregious but he still does it. Leans back, takes a half-step forward but never actually shifts his weight forward, tries to throw it with all arm.
That's almost certainly what's causing the inconsistency in both accuracy and velocity, i.e. why he throws so many floaters and ducks. When you're trying to generate all your power from your arm and none from your body, you're going to be inconsistent.
I think if they fixed that, there's something there, I can see why they like him. Maybe a career backup, maybe even a bottom-tier starter. I don't think that's something you can fix mid-season though.