Paze (https://www.paze.com/) feels to me like the collective banks’ attempt to wrestle back control here. You could imagine a world where it’s a separate side channel for payment for the same credit card accounts but without the rent-seeking intermediaries.
After looking at it, the “uses a different number” would seem to imply that the side-channel thing is right. Pace-participating entities load your cards to their system, you get access via your email address, Paze acts as an interface whereby issuers associate a new unique ID with your account while still showing you your “Visa” account number or whatever and “validating possession” with CVC.
That said, my level of trust in Early Warning Systems, who runs it, is pretty low-Zelle looks like a hot mess with EWS/banks ignoring Reg E as much as they can get away with:
