The word "partial" means it's not reversible. It has forever implications and people should stop talking about it like it's a pause button with only good things coming from it.No. It is partially reversible - and for Gender Dysmorphic adolescents - it is more reversible than allowing puberty to proceed either with natural hormones or gender-affirming hormones. Anyone who tells you otherwise doesn't understand the science.
Endocrine Treatment of Gender-Dysphoric/Gender-Incongruent Persons: An Endocrine Society Clinical Practice Guideline
You'll be pleased to know that we don't allow children to make such a decision. That decision must be made by the parents and/or the Family Court - who are capable of understanding the long-term implications of such a decision.
I agree that biological puberty will be far more active, but I believe the stats also show that gender confused children who don't transition overwhelmingly just turn out to be gay adults - where as those that begin the process stick to it. One of those has much better outcomes by the way.