> If that is the reasoning behind allowing infant circumcision, then there should be no argument against puberty blockers.

That sword cuts both ways: if the reasoning for banning infant male circumcision is "they can always do it as an adult", then that's a perfectly good reason for doing it with puberty blockers too.

I've always been against infant circumcision. Why would I extend that exception to be broader? I'd rather narrow the number of things we can do to children, not expand them.