That is the title of an interesting news article Joanna sent me... "You’ll often hear lawmakers, activists and pundits argue that many transgender people regret their decision to have gender-affirming surgeries – a belief that’s been fueling a wave of legislation that restricts access to gender-affirming health care. Evidence suggests that less than 1% of transgender people who undergo gender-affirming surgery report regret. That proportion is even more striking when compared to the fact that 14.4% of the broader population reports regret after similar surgeries."
From various studies that I have seen regarding knee replacements, dissatisfaction rate are between 10% to 20%.
Yes sadly there are people who de transition. But it's like 2%. So I myself will not change back to male after my transition to female is complete.