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Repectfully, the question of how common it is is essential. If it were really the case that 50, 60, 70, 80% of people who underwent complicated surgical procedures came to regret the surgeries and undertook more surgery to undo them, I'd be the first to agree that was a problem.
This is what many who talk about detransition believe is on the verge of happening, in some unspecified but near term future (and can always put off just slightly into the further future).
