[Just another Joe]

Whether the surgery was indicated or not if the patient insists on it, signs a waiver stating that they knew the risks and were willing to take them, and can find a doctor willing to do the surgery it should be laughed out of any court.
Notice I say, "should be".

[joonbug]

I am glad you added the "should be". There are elective surgical procedures performed that involve extensive informed consent processes including written materials, watching videos, taking a quiz, discussions, etc. and still they sue if the outcome is not to their liking.