What the man is allowing here: Jason practically using him like a support to get himself standing back up, with Bigby following the other in rising to his feet once Jason is standing again.

What he isn't allowing here is-- well, Jason fully getting away with this. Call it paranoia, or just call it lived experience, but Bigby feels like he knows exactly what's going on here. It's the same sort of stuff he'd be telling someone to try and avoid having to see a doctor or - even worse - having someone take care of him. Oh yeah, he's fine, he's had worse, he knows someone who can help, it's totally fine.

Maybe it's an uncharitable read of what Jason is saying here, but Bigby is pretty sure he's right about this one, especially given the fact Jason is apparently enough of a dumbass to get himself into a pointless fight like that in the first place.

"At least let me help you get that glass out of your back," he says, sighing like a tired parent uncle local sheriff. "If you have some weird doctor aversion, I'm not gonna force you to do anything. But there's no way you're going to be able to reach that glass back there with your own arms."

And in return Bigby won't whine at the other about the rest of the injuries, trusting that Jason will be able to take care of those himself if he truly insists.