I recently dropped 70k rupees on elective surgery. If the girl with the camera paid for my surgery I'd be happy to let her film the whole thing.

I've had medically necessary surgery done also. If this girl or her org were to pay for that, and all I had to do was fulfill stupid racial stereotypes on camera while being mocked by silly foreigners (or something equally offensive), I'd be thinking "yay, I can walk again!"

Now being a bunch of do-gooder western types, I'm sure Watsi actually goes to great effort to maintain patient privacy. But even if they didn't, patient privacy is really a small price to pay for important medical interventions.