Again, you cannot divorce "gender affirming care" from these surgeries. They usually go hand-in-hand.
Puberty blockers are not reversible. Kids on them will not catch up in terms of stature and bone development to what they would have been or when they mature and recognize they made a mistake. Having had a son born with SGA and was put on growth hormones, I can assure you that placing someone at age 15 to try to recover growth lost by puberty blockers will not restore that child to their growth trajectory prior to the blockers. The window for even marginal growth in stature is quite short and must be undertaken when a child is very young. We also lack a time machine at this point, so we cannot reverse the lost time and lost social development. TO make it more understandable for you, take a 12 year-old boy placed on puberty blockers. Since upwards of 90% of "trans" kids spontaneously grow out of these thought patters and return to "identifying" as they really are, that young man at 15 will be smaller and less developed than his male cohort, which in turn leads to social and psychological implications. This is particularly pronounced in boys, but it happens with girls, as well.
You conveniently left out cross-sex hormones. Are those reversible? They are not. Among all the consequences, when used in combination with puberty blockers, which is often the case, they can cause sterility.
Instead of reading science, you are reading text conceived gender theorists and activists, the first hits that appear on a Google search.
There's exactly one person reading these exchanges between us who thinks you are the knowledgeable one on this topic and I am the ignorant one. Guesses?