Gender affirming care is for transgender people and it covers a lot of things, including but not limited to:

• Hormones
• Surgery (includes more than genital surgery, which kids don’t get)
• Therapy
• Choosing a new name and pronouns
• Wearing clothes that match your gender expression
• Getting a haircut that matches your gender expression
• General support for exploring your gender and gender expression

What you’re thinking of is called conversion therapy.