Plastic surgery is no one's business but the person getting it, and perhaps a mate or parent if they are paying for it. So that makes it surprising the Dark Lords haven't written one of those near, semi, kinda sorta rules about it in one of their study articles. They stick their noses into a lot of things that are none of their business. It also isn't any business of the rank and file, but they've been trained like Pavlov's dog by the Dark Lords to judge others.
I know lots of people who have had plastic surgery of various kinds, and every one of them is satisfied and feels better about themselves for it. I have stories.