We already have COPPA. The result of which I have seen in my child's classroom when the teacher instructs the class "enter a different birth date to get around this restriction so we can use this website for our class activity"

No, we don't. This is big tech shifting liability off themselves with the added bonus of full de-anonymization. Take a look at who is lobbying for this.

We already have many companies to help, have Palintir de-anonymize every user.