I may be missing something obvious but, what happens if people just lie about their age en masse?
Then they will up the ante to require age verification at the hardware level, using this bill as precedent, and all the people cheerleading this bill will say “what’s the big deal? You show your ID all the time! You can’t drive without ID!”
That's not the problem this is meant to solve.
You can give your kid a cigarette, a gun, alcohol, heroine and the car keys.
What this enables is to set up a children's account on Linux.