I'm not sure if you have filled out the form, but whether you cross-reference the email address with other data is asked in a separate follow-up question: "Do y

I'm not sure if you have filled out the form, but whether you cross-reference the email address with other data is asked in a separate follow-up question: "Do you or your third-party partners use email addresses for tracking purposes?" Therefore if you collect email addresses for user account purposes you would probably answer yes to to the first question about whether they are linked to the user's identity, and then no to the second question of whether you use them for tracking purposes.