I agree he should stress his doctor to avoid GA unless truely necessary, but There is no need for the militancy... personally I think doctors are hated on too easily. When they do something wrong we hang 'em, but when they do something right we take it for granted. Most people imo seem to forget what it takes to become and to be a doctor. they arent spoilt preppie boys who got off easy, as an exception, they actually worked hard and studied their ass off for their above average income.
There is a new vibe in the air, where everybody picks up some random, specific knowledge from different fields, and it is giving people a false confidence in their knowledge. From my (passive) experience in hospitals, I'd say the guy probably seemed like he would be very stressed out when conscious and just sedated and this could hamper the operation. I've seen people be put under for minor local surgery,simply because they were for instance so scared of the procedure or distrusting.
At the same time I know a woman who is all into self control and meditation and whatnot, and she opposed having a vertebral aneasthetic injected into her back and she and her surgeon agreed to do a full knee reconstruction (!) without any aneasthetic.
I recommend you get on the same frequency and altitude as your doc, dont look either up or down to him, and express your concerns about the chosen method of aneasthetic. He will explain his decision and if he was wrong it's likely you can work it out. If not, THEN say fuck him and find another doc