I think you miss the point (But who am I)

the simple fact you sending the same signal over and over again, with all other signals your browser send, it will be another key to make you apart. They don't care if you lie. Important that you lie the same story every time.

And after having your dob, who could easily be a flag if you are less than 18, they could easily request your name, or a document number, but I think it will be much better, it will have some ISP and/or Device ID.

It actually is more like a flag in most cases. Specifically, in the case of AB1043, you enter your age or your DOB but then the OS provides an age range (<13, 13-15, 16-17, 18+).

Also, while some bills do seem to require browsers to promulgate age data to websites (e.g., NY SB102A [0]), AB1043 does not. Rather, it requires the browser to read the age range just like any other app, but does't say anything about providing it to sites.

[0] https://www.nysenate.gov/legislation/bills/2025/S8102/amendm...