Secondly, we don't do drug trials on children or other vulnerable groups. Ever wondered why you can barely take any medications when you are pregnant? It's not because they've been tested on expecting women, it's because they CAN'T be tested on expecting women, no trial would get past ethics to test on pregnant women and unborn children. This is (usually) the same with kids.
The very few exceptions to this is in highly highly dangerous conditions where the alternative to experimental treatment is death such as childhood cancers, or other incredibly serious outcomes.
Puberty blockers CAUSE so many serious life changing side effects. Teeth and bones crumbling like octogenarians, lack/loss of sexual function, urinary problems, shortened stature, lack of mental maturity/IQ reduction, infertility.
We need to be looking at very very compelling reasons to take these drugs to make all these side effects worth it. Any decent studies show no improvement to happiness or mental health on average. The original results of the danish study that the whole edifice was build on, have NEVER BEEN REPLICATED despite several attempts.
Please tell me a compelling reason why anyone should be on these, what is the outcome we are seeking here? Because you can't change sex. Puberty blockers will only ever break the healthy bodies of a group of people who are already struggling. They will never get what they want, not really.
The reasons need to more then 'they wanted it'