I don't understand your comment, the government knows which sites you visit anyway because it can see the SNI field in HTTPS traffic.

The main point is that the verification is done on the device. The device has a digitally signed flag, saying whether it is owned by an adult user or not. And the OS on the device without the flag allows using only safe apps and websites sending a "Safe: yes" HTTP header. User doesn't need to send your ID to random companies, doesn't need to verify at every website, and website operators and app developers do not need do anything and do not need to do verification - they are banned from unverified devices by default. It is better for everyone.

Also, as I understand the main point of the Act is to allow removing the content the government doesn't like in a prompt manner, for which my proposal is not helpful at all.