Which would be meaningful if phones weren't remotely controllable.
So the net effect is every AI agent will also have and connect to a physical phone.
One can expect it will be tied to a government ID, at which point they ban you from the internet if you disobey them.
... which is why you'll get locked out if you happen to visit an unusual number of sites in a day.
The attestation will include a unique ID of the phone, so that if you get banned you have to keep buying new phones and keep paying money to Google. Google won't stop this because it makes them money.
And the official Google OS just won't feature remote-control software.