Nothing about this law restricts what a parent is allowed to do with respect to their children. If a parent wants to set up a device or account for their kid and set the age of the account to 18+, that does not violate the law.

The bill affects operating systems and apps, requiring them to have only the most basic feature necessary to implement age-based restrictions, and to make it an official platform-wide API instead of each app implementing their own age verification scheme. But parents remain free to use or ignore the age setting at their own discretion.