Wow, I thought dogpiling was frowned upon here.
Siotehcat, I can kind of see where you're coming from, although I don't necessarily agree with the assumptions you're founding your opinion on, and though it's not rude to think, "I don't want a male surgeon operating on my cat", requesting one in so many words would be crossing the line.
If it were you being operated on, absolutely, but your cat is not an extension of your body.
That having been said, if you perhaps had the opportunity to talk to the surgeon beforehand, would that help put your mind at rest?