I think it’s a gross failing on the part of the state to intentionally _pass_ a bad/vague law and then ask for amendments. If you can’t write a good law, then don’t pass it. Corporations already do enough beta testing on people and the government certainly shouldn’t beta test laws.
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.