The context was medical intervention for a minor. You trying to narrow it to be only that of treating gender dysphoria has the convenient effect of having to only consider whether the suffering is related to the dysphoria, and not the broader consequences such as whether a minor is able to understand those consequences.
The suffering in the moment is "I want" and the damage the treatment has in satisfying the want creates "I can't ever..."
Discussing that requires the broader context, so your redefinition doesn't work.
Puberty doesn't have unhealthy effects, the dysphoria does. There is also evidence that treatment doesn't resolve the worst "effects" namely depression, anxiety, and suicidal ideation or tendencies. Those often return after the initial euphoria of getting what's desired wears off. It's why there's a fair percentage of kids that later regret having done that to themselves, and it's why the suicide rate for those who receive transition treatment doesn't actually go down, and in some cohorts the rate actually went up.
If we really cared about people suffering from dysphoria we'd look at these facts and be forced to reconsider how quickly we reach for these treatments.