You don't sound like the average user.

They either already have a gmail, or sign up for one my scanning the QR code you mention. I don't recall if a phone number is mandatory, but the average user probably has one, doesn't mind giving it to Google (to not lose access to their account if they forget their password is a perfectly valid reason for most people). And they'll probably not provide one from a sanctioned terrorist state with a reputation of nefarious cyber activities. Like buying Google Accounts, but much worse too.