Re: The usual Gov?
There was meant to be a little irony there, as that did cross my mind, regards the Pub Landlord 'knowing you'.
The distinction I was trying to make is the fact Google fingerprint your devices (without permission) and store this fingerprint in their cloud, but at the same time constantly prompt you via the UK's Privacy Check-up tool to confirm your privacy settings, when Google can see full well the fingerprinted device being used has setup the Privacy opt-out already..
If you clear your cookies, it shouldn't make a difference, but maybe Google just saw that as too creepy, using that retained info, to continue to store opt-out info.
Personally, I find fingerprinting devices without permission, creepy, there should be explicit consent for this to happen. Such as "Do you Google to store a fingerprint about the device your using?"