Oh fuck, we're going to get serious in front of everyone? As you know, I'm very resistant to the conflation. I can empathize with the ridicule and stigma to a degree, I absolutely cannot in any way relate to the condition of 'transgenderism' itself. It's like: If you're gay, change nothing. If you're trans, change everything.
Gay? Allow people the freedom to act on their innate feelings and pursue affirming consensual sexual activity and relationships without repression or criminalization. Done. People with gender identity issues are significantly more complex as they also can (or tend) to include but aren't limited to psychiatry visits, crossdressing, new pronouns, puberty blockers, synthetic cross-gender sex hormones and life altering reassignment surgeries.
That said, it's mostly a matter of personal liberty and right to bodily integrity to me. If hormone therapy and gender reassignment surgery improve quality of life and psychosocial outcomes for them, then all the better. So basically pro-everything post-18 with the exception of unfettered access into exclusive female spaces. I think there should be a post-op compromise on that at minimum.
Minors are an entirely different minefield. I feel like they should be made to feel as comfortable as possible, but you have to draw a criminal line when it comes to pumping prepubescent children full of potent synthetic hormones (or worse), even if reaching a certain level of physical maturity comes at the cost of making transitioning more difficult later in life, which it definitely does.