What is it then? You don't take surgical and hormonal means to not 'correct' something, so something is obviously being viewed as being defective, as far as I'm concerned.
Just to recontextualize this a moment, The vast majority of gender affirming care is done by cis people, not trans people. 'Correcting' the mismatch between their expectations of how their body should match their expectations of gender.
When a teen boy gets surgery to correct asymptomatic gynecomastia, it's gender affirming care.
When a teen girl takes estrogen to correct unwanted facial hair, that's also gender affirming care.
The important thing to remember is that even though the mismatch is a defect they want to correct, that doesn't make them defective *people,* which has entirely other negative connotations. The defect isn't in their personhood.
This is also important to remember when talking about disabled people. The difference between you have a disability and you are a disability.