[munk-a]

Rotating numbers are still extremely viable with fixed card numbers - it's possible to issue a set of semi-permenant printed numbers and also offer a tool that can issue additional digits for untrustworthy retailers or strange one-off payments. The removal of digits from the card itself is a cost being levied on the customer and it provides no real benefit.

[scrollaway]

Removal of digits reduces reissuances which are annoying for both issuer and customer.

[thasaleni]

Cards are moving towards no card at all i.e. virtual cards. USA is very slow in adopting new payment technology compared to the rest of the world. I live in South Africa and tap to pay is so much of a thing that you do not have to worry if you leave your card at home as you can tap at like 80% of the merchants, and if you can't they will have a fall back like QR code etc, NFC enabled cards have been around for years and all the merchants are really quick in adopting them.