NAT64 doesn't make sense for consumers. There are too many apps that hardcoded IPv4 in their code. People are going to complain that their old Xbox games don't work.

For most people, dual stack works fine. For mobile, the solution is 464XLAT that translates locally. There is MAP-E that does translation on gateway with IPv4 on local network.

For businesses, NAT64 makes more sense cause they can control what software is running. Even there, usually have to make IPv4 subnet for the old printers.