https://developer.apple.com/documentation/apple_pay_on_the_w...

Customers can ultimately set whatever they want as an email address there, and it's not verified in any way by Apple before completing the payment, but defaults matter: The default on my phone was my real email address from my contact card, and I did not even notice that it was preselected in the payment sheet until I got a confirmation email by the checkout system.

In an online payment context, this makes total sense to me: The merchant needs some way to identify the buyer even just for digital goods, after all. But it came very unexpected for me in a restaurant context, where I know that Apple Pay (via tap and pay) normally does not even reveal my name.

I really hope that Apple realizes the pretty big privacy gap here and starts integrating their email relay service into Apple Pay sooner rather than later, as well as making it possible to override required fields in some way.