That is literal misinformation. (https://support.google.com/mail/answer/6603?hl=en https://support.google.com/mail/answer/6603?hl=en) "When you open Gmail, you

That is literal misinformation. (https://support.google.com/mail/answer/6603?hl=en https://support.google.com/mail/answer/6603?hl=en) "When you open Gmail, you'll see ads that were selected to show you the most useful and relevant ads. The process of selecting and showing personalized ads in Gmail is fully automated. These ads are shown to you based on your online activity while you're signed into Google. We will not scan or read your Gmail messages to show you ads." Also assuming it was true, if you deny people the Google Sign-in they will simply use their Gmail address next, so you'd have actually increased usage of the service. Brilliantly thought out strategy.