Shouldn't one as a customer/consumer have the right to choose which personal data is stored with the service provider? Ofcourse if some form of data is stated as mandatory by the service provider, then it's customer's choice to continue using the service or not, provided that it is clearly stated what is being stored or not.

Nevertheless, I wouldn't be surprised if service providers like Google still store some form of metadata about users even when they request for deletion of their accounts.