You are missing the point.

They don't care whether you are 14 or not. They want your biometrics and identification. "Think of the children" is just a pretense.

In general, any government already has your information, and it's naive to think that they don't; if you pay taxes, have ever had a passport, etc. they already have all identifying information that they could need. For services, or for the government knowing what you do (which services you visit), then a zero-knowledge proof would work in this case.

The companies don’t, and th government already has your government id.