What difference where it occurred make?
Puberty blockers?
Because the laws can be different, and the degree to which factual checking may or may not have occurred can be different, especially when sourcing news articles. The TV over here for example is more biased (on both sides, if there are only two) than the printed press in the UK. Therefore a degree of caution is necessary before simply taking an article on face value.
The case you raise could actually be one facing a degree of dispute - in terms of the story being a fully factual one.
Either way, the one I found was in California, and as such the law prevents a minor making such decisions. In rare cases (based on data) parents have agreed to surgery for their child, which appears the case here. The individual may well have a very good case against their own parents (but, despite the individual appearing on all sorts of USA media, her parents have not had a single word to say). The individual has also confirmed, according to their story, that the medical professional did not adhere to the medical standards for treatment of a minor (prescribing both puberty blockers and testosterone at the same time, which is not recommended). So even if we accept the story at full face value, it appears to be an outlier caused by a single medical professional performing surgery and prescribing medication outside the agreed standards and with full parental consent and involvement.
Anyway, to your other question - I do not have an opinion, in so far as I do not purport to understand the individual situations people find themselves in. If the prescription of such drugs is recommended, because the individual is presenting near suicidal tendencies, then who am I to tell them they shouldn't be allowed? How do I know what conversations have been ongoing? What their parents think?
At the end of the day - my opinion is that anything that so fundamentally alters you as an individual should require a high bar for approval. It should require significant time to pass to allow for assessment, treatment (if needed), alternative avenues to be discussed etc.
In the USA 0.4% of those who transition, take the step to de-transition.