What a jerk to say something like that! Honesty is one thing but this isn't it. This creep is being intentionally hurtful and completely insensitive. Don't pay any attention to those who feel compelled to tell you negatives about the surgery. Trust your doctor, he knows you and what you need. Put all your questions and concerns to your doctor, he's the one with the medical school degree.
Wishing you good luck with the procedure!