It would be good to understand the recommended treatment program that is implemented for trans youth (hint: it's not surgery).
What is definitive is that care for trans youth saves the lives and well being of the people who have access to it. You can easily find creators on Youtube or TikTok who will talk about their experience firsthand, whether they received treatment when they were young, or wished that they did.
On the "permanence/regret/detransition" angle that people are concerned about: there's a stat that someone else can probably post, but the rate of "regret" of gender confirming care is significantly lower than many common cosmetic procedures. Detransitioners are a small minority, and transphobic detransitioners who are outspoken about being "tricked" or something are even smaller still.
Other likely thing is bathroom stuff, but like most transphobia it gets nonsensical fast since the only way for that to work is for someone to think "I can always tell" which is always false false false.