Thanks for your thoughts.
I think there are few actions in that category that would do that kind of irreversible damage. Kids, in my estimation, are pretty resilient. So, for example, verbal/physical abuse are way more common than giving children hormone blockers, but I think only the most severe forms of abuse (e.g., causing the kid to lose physical faculties permanently) can really compare in terms of degree. In terms of frequency, I do think you are correct that this kind of severe abuse is still more common. However, I think that sort of abuse would be much more difficult/costly to prevent at the policy level. By contrast, banning the testing of hormone blockers on children would shut down the trials entirely at very low cost/difficulty. So it's an ROI or cost-benefit argument on top of moral one. Hope that clarifies it.