As long as it’s an approved procedure with minimal side effects where the benefits far outweigh the downsides, I don’t see that as a problem any more than parents who get other non life saving treatments for their kids which will be beneficial in the future.

I think you're probably right, and that it doesn't make much sense to not give your child a drug that would fix their bone growth even if it isn't literally life-saving.

As long as the side effects are well studied and strictly less bad than the alternative. If the side effects were awful then it would be much trickier, but it seems like that's not the case.

Skin color effects your future.

Should parents change their child's skin colour.

If you think that has ethical issues, then so does height.

Cosmetics can change your life path

Crooked teeth we accept as ethical to change in children.

Breast size we don't.

I think ethics is involved, even if it's wrong.

As I recall, being significantly out of range in terms of height also has fairly broad health implications due to maldevelopment of internal structure.

So, it's not just height that gets fixed.