Which is why there is the "And more importantly you can revoke it (at any point) and the site can't deny or degrade the service (unless the data is strictly nec

Which is why there is the "And more importantly you can revoke it (at any point) and the site can't deny or degrade the service (unless the data is strictly necessary for a specific action related to the service)." point - you're not allowed to deny access to a newspaper article if somebody does not consent.