It would be interesting how the first few times went for him, or if he'd already had a guy suck him off before he became a provider. It would be unusual for a straight guy that age to be completely cool with it, but it could happen.
I agree with what's been previously said - it seems likely that he's looking for lower volume and better fit.
I think he's going to have takers, and a lot of fun - more power to him!