If it actually IS rising and that's not just propaganda, then I speculate that there are a lot of people who, in times past, would not have transitioned, but nowadays are, and are finding that it's not the magic bullet that they thought it was.
Also, because the standards for gender dysphoria have basically been abandoned, so that now the only requirement to transition is the patient's own judgement, there are a lot of people transitioning that would not have 30 years ago.
The end result is that people with autism or mental illness are basically being left to make their own treatment decisions. Of course this is a recipe for disaster, but objecting to it makes you a bigot. Basically the whole situation is a trap for the mentally ill, designed to put them in a situation they're not prepared to handle.
Under those circumstances, no wonder suicide is skyrocketing.