The parent comment was talking about in a restaurant

> But it seems pretty clear why they are doing that: Besides saving some time for the waitstaff, I only now realized that by using Apple Pay, they get at least my name and email address…

In the case of a card not present transaction, the merchant always asks for your address when using credit cards. Also the original submission is about “cashless societies” and the disadvantage of it. No one is complaining about merchants refusing to take cash for web transactions.

Yes, and I was adding to that comment, mentioning restaurants using QR codes not just for menus, but also for payments. This effectively makes restaurants using this system card-not-present merchants.

> No one is complaining about merchants refusing to take cash for web transactions.

Agreed, but why does a restaurant have to be a web merchant when there is a much more convenient alternative available?

I have never been to a restaurant that requires you to give them an address for card present transactions.

Me neither. I am talking about a card-not-present transaction at a restaurant.

The checkout site did request my email address from Apple Pay, which obliges by default.

If that were the case what happens when you give them a physical card? Do they also ask for your address? That would be amazingly slow