The social media provider must “verify, using a commercially reasonable method” the person’s identity and the relationship to the minor.
You cam do that through credit card probably.
The identity sounds easy enough (if a bit invasive). The relationship… the kid’s birth certificate? A health insurance card? A stat dec? A cheek swab? That’s a lot of effort for a parent, and will they really want to turn those details over to a social media site?
It probably will be just a tick box.