I'm sure someone who's better at psychology could do a better assessment of these people after browsing those subreddits but I just get the impression they're female coomers going even crazier from taking testosterone.
I think this is really just it. Normal female sexuality souped up by testosterone and then given a gloss that allows them to express it without feeling too much dissonance. This last part is probably the reason for all the "no misgendering."
What the actual fuck do puberty blockers even do besides fuck your bone growth and penis growth? None of these popular troons who took it as a child look female and all look built like dudes.
Honestly, the ultimate answer is frankly put: fuck all. At least from the point of helping them pass or w/e.
They don't stop height growth, and by zeroing out sex hormones they may increase it. This is because sex hormones (estrogen really) plays a major role in closing growth plates, but ironically for FtMs they're usually administered too late to make a difference.
It's possible that they
do have some effect on something like facial morphology, even if they have apparently zero effect on skull-size/shape and skeletal morphology. Interestingly, I don't believe troons are even aware of this stuff and I've never really seen it talked about outside of KF, even though it's incredibly obvious.
One obvious thing that avoiding puberty really does, is block body & facial hair growth. But, long term this barely matters since you can just get laser electrolysis to remove it. For FtMs it can enable key-hole surgery if you give them early enough but how much does that matter? Not much I should think. Maybe more relevant would be the voice for MtFs, I think that's something that would be a fairly unalloyed benefit if you were a troon since it seems like most troons can't pull off a convincing female voice (usually it sounds either gay or strained and weird).
Honestly, the whole "I would have passed if not for puberty!!1" is probably ~75% wishful thinking. A big problem is that along with ignorance re. skeletal morphology not being hormone-linked, is that they seemingly aren't aware of the "Petras Effect"; aging tends to makes you less passable (unless you turn into an androgynous blob or something). This is my favourite example of this phenomenon:
This is Maria Martinez-Patino, a CAIS X,Y woman, note how age just really brings out the chromosomes and remember, she literally can't even process androgens.
So, what they end up doing is comparing some 19 year old who was satisfactorily neutered vs. a 38 year old, or alternatively vs. a 19 year old who has been HRT for 6 months or something and who still hasn't gotten 100% of the fat redistribution/muscle loss etc. that they'll get. Both of these are obviously unfair comparisons. There's also the sexuality confounder to consider as well: HSTS-types make up a disproportionate fraction of those who end up on PBs. On average HSTS-types pass better since they tend to invest so much more effort into make-up/fashion and they do so with an eye to the outside world whereas I think a lot of AGP autists end up just playing to their own fantasy worlds.
IMV, there are minimal to no consequences to just banning off-label GnRHa use in minors. The benefits of PB (and of early transition) are overstated or non-existent, in fact I don't really think troons or their apologists ever seriously thought about it all that hard. There's not even clear evidence that they improve mental health, a fact that is actually quite predictable if you think of gender dysphoria is being mostly a hypochondria-like neurotic fixation combined with background mental health issues. Moreover, everyone knows and agrees that if you put a kid on PBs there is a 95-98% chance that they'll transition to CSHs at 16 (or whatever age they can be legally prescribed at). This is because (a) "affirming" causes persistence, (b) you're estranging the kid from their peers by retarding their development, causing them to not develop sexually or physically, (c) blocking the possibility of their re-evaluating their supposed "decision" by making them unable to experience sexual feelings etc. and (d) creating a clear medicalized pathway from them to fixate on -- they can always blame all their problems on just not having CSHs. The whole idea of them being a "stay" - the original purpose - is a straight up lie at this point.
