It is not even slightly the "default" response. It takes years of dedicated effort to prove to a slew of doctors and therapists that it's the right thing to do. You don't just get surgery or hormones just by asking for them.
There are still many publicized cases of puberty blockers being given to young children (i.e. before 12 years of age). At least in some places in the US it most definitely does not require "years of dedicated effort to prove to a slew of doctors" to have these drugs prescribed.
Also, there have been some pretty well publicized stories of young people who underwent gender transitions who came to strongly regret their decision, and they told how they felt, if not necessarily pressured into the decision, that there weren't "speed bumps" along the way saying "maybe we should wait a little longer before you undergo irreversible surgery."
You know that's the licensed use for these meds, right? To block precocious puberty?
Again, my primary concern is the administration of irreversible treatments to children.
Yes, I agree, I have seen many on "the right" take singular examples to demonize the other side with no real concern about the welfare of the individuals involved.
But I have also pretty much never seen those on "the left" empathize with and stand up for the individuals who have regretted their transitions or used it to reexamine some of their views. More often than not I see these individuals demonized as "tools of the right".
Regarding surgery, there is a rather infamous 'gender-affirming' surgeon, Dr Sidhbh Gallagher, who specialises in double mastectomies for young women and children. The youngest so far is apparently only 13, and patients report not much gatekeeping for this procedure either, from her surgery. She's infamous mostly for TikTok videos where she exhorts Gen Z viewers to "yeet the teets", but also for some horror stories about poor follow-up care, with some patients nearly dying.