They JUST told you, no one is advocating for surgeries in children. What they are advocating for is what has been done for ages - puberty blockers and therapy until they are of the age to make the decision for themselves.
You keep referring to “surgery” and now “chemical therapy” (I assume you mean hormones), but that’s not at all what is supposed to happen with children, it’s a straw man made up by by the right wing.
You say “it’s our job to give them time to grow into a decision or an identity before making a lasting choice” and that’s EXACTLY what's been happening and is still under assault by these anti-trans laws that keep getting passed in the confederate states.
They don’t want them to exist so they are trying to legislate them away.