Unless it is absolutely medically necessary then it is a vanity body modification performed entirely without consent. It is abuse to subject children to such a thing.
I'm perfectly fine with vanity. Not mutilation. I think care should be taken with the word abuse though.
From wikipedia: Child abuse (also called child endangerment or child maltreatment) is physical, sexual, and/or psychological maltreatment or neglect of a child or children, especially by a parent or a caregiver. Child abuse may include any act or failure to act by a parent or a caregiver that results in actual or potential harm to a child and can occur in a child's home, or in the organizations, schools, or communities the child interacts with.
Any act that results in potential harm. There is great potential for harm in many choices a parent makes. Including gender affirming care.
Oh well. At least there is consent, which means it wasn't forced, it was freely chosen and isn't abuse.
Consent is not the metric for abuse. It's about harm and potential harm. Weighing risk verses reward. That's why it's not abuse to rush to begin hormone therapy if a child is suicidal even though there are irreversible changes that occur.
Also, I'm not sure that what's happening with gender affirming care can be considered a free choice if the child is suicidal and if psychotherapy is not offered and available. All the choices need to be presented and available for it to be a free choice. And no one who is suicidal is able to consent to long term changes to their body.
Is there any harm waiting to begin gender affirming care till 16?
We are consenting and guided by medical professionals. Infants are not asked, give no consent and are forced to go through with something they may not want.
That's true. The parent is hoping that the child will agree that it was the right decision when they are older. Ultimately it's about removing barriers for the child.
It just happens when the parents want it, no exploring why or if its even needed and necessary.
That's not a fair assessement. It's about what the child will want in the future. And saying it's not explored is not fair either.
It is not at all comparable as you are trying to make it sound.
OK, then, it should be fine to postpone all permanent body modifications including hormone treatment and especially top-surgery until 16 years of age. The person might want their chest once it developes naturally. They might want to breast feed, but don't know it yet.