To me, it's more regulating the behaviour of people than regulating the developers of intentionally addictive and intentionally poorly-moderated systems.
The big hegemonic tech platforms, as they currently exist, are not just harmful to adolescents, they're harmful to society as a whole.
I also don't enjoy the prospect of how a ban like this might be implemented in terms of age and identity verification, since I expect it's going look like "hand the data brokers even more of your personal data, they pinky-swear they'll only use it to comply with the law".
Then pharmacare. Then dental care. Then all the rest of healthcare that our strangled system has left to the private market. Then the telecoms. Then public transit.
Also, the function of a torque wrench isn't to apply a lot of a torque with less effort - that's the function of a torque multiplier.
A torque wrench is intended to apply a specific amount of torque to fasteners. Engineers and mechanics have specific torque values for threaded fasteners based on things like material, thread type, load types, and application, and a torque wrench is what we use to make sure that we hit those targets.