That's not how these companies aggregate their data. Data without a face is almost useless to them, they will, using some metric or metadata, link a data-set with a human being. Just because a google account has none of your personal information doesn't mean the company doesn't already have a file with your name on it from some point in the past when you did, and all it takes is 1 algorithmic connection to link that existing and growing profile on you with that google account and it may as well have your name all over it because in Google's eyes they already know it's you.