tempted to say I'm a child on all my devices if it will automatically prevent cookies and other methods of tracking/advertising.

Just use the "do not track" header. (1).

That's to say: it will not work. This is step one, and it'll have the same result as the do not track header. You can't force a Qatari or Malaysian developer to care about US courts.

Thus comes step 2 after the uselesness of this bill becomes apparent. Make it usefull by mandating automated censors at OS or application level. Outlawing general purpuse computing and open source software where people can deactivate this important safety feature. That's the way the EU wants to do it with mandatory EU LLMs in applications.

Otherwise they can choose to go the China route and firewall on network level, to make sure all subjects have access to only government approved, safe information. For the children.

But it's best to put the frog into cold water first.