I watch surgery videos sometimes, out of fascination. It's not gore to me - sure it's flesh and blood but there is a person whose life is going to be probably significantly better afterwards. They are also not in pain.
I exposed myself to actual gore vids in the aughts and teens... That stuff still sticks with me in a bad way.
My understanding is that during surgery, your body is most definitely in pain. Your body still reacts as it would to any damage, but anesthetics block the pain signals from reaching the brain.
But there is a difference between someone making an effort healing someone else vs content with implications that something really disturbing happened that makes you lose faith in humanity.
I exposed myself to actual gore vids in the aughts and teens... That stuff still sticks with me in a bad way.
Context matters a lot.