"Nonsense" isn't an argument, and neither is poorly executed, and very likely uninformed, speculation. I guess it's easier to shrug this off and disingenuously speculate, effectively playing with other peoples' livelihoods when they don't have an emotional tie to you.
Yes, the Kardashians are ridiculous. Yes, Jenner is likely a narcissistic attention whore. These have nothing to do with GDD. No one would do this sort of drastic thing out of the need for attention and validation - have you met a trans person before, specifically one who is pre-everything, not out and such?
What you're suggesting reeks of ignorance, prejudice, and dogma, and again is embarrassing. These people go through hell, and their suicide rates are through the roof. Spin it however you want, a large portion of trans people are dying because of their dysphoria and you people are likening the alleviation to cosmetics and saying it's not life threatening while so many of their lives are ending prematurely due in part to those same people.