FWIW I fractured my shoulder severely, nearly 4 years ago, and it was repaired with a plate and 10 screws.
Ten months later my doctor said the hardware needed to come out, since the screws were poking through and out of the bone.
So I understand his situation. I do not in the slightest believe he is being other than forthright, about his need for surgery.
If his doctor tells him to plan of 4 weeks, I accept that. Leave the man alone.