You realize that losing teeth is a natural loving process right? Do you still have all your baby teeth? Do your rooster and balls automatically fall off when you realize you're transgender? People getting their wisdom teeth pulled out is a cosmetic concern because it's a social expectation to have "organized" teeth, as compared to thousands of years ago when there wasn't any profit to be made in the dental industry.
BTW I love rp'd your sister on Blockland like a decade ago, just remembered that thank for for mentioning that rally
It's called LSD micro-dosing. Look it up if you feel like learning anything except what your left-wing college feeds you. If you get too far down the rabbit hole and a guy comes to your door at 2AM asking about a lost dog, just tell him you supported Hillary and you'll be considered too dumb to be a threat.
Your appendix bursting is probably the result of natural processes in the human body. Should your burst appendix not be removed?
This appeal to nature argument doesn't hold much dice because most of the human condition today is engineered already. Most of our crops have been selectively bred from relatively disgusting to eat wild variants over thousands of years. The dramatic extension on human lifespan is derived from artificial, engineered medicine; imagine if your grandfather died of old age at the age of 40 or even less.
Presumably if genital modification surgery were that debilitating to someone it simply wouldn't be done. Even if it costs these people their love lives, they're much more mentally healthy being spared from the gender dysphoria feeling like they are the gender of their choice.