Regardless of whatever other things may be better or worse about ipv6, it's still a reality that as we continue connecting more and more devices to the internet

Regardless of whatever other things may be better or worse about ipv6, it's still a reality that as we continue connecting more and more devices to the internet eventually ipv4 addresses will become so scarce and valuable that a not-insignificant minority of residential customers will be behind such aggressive CGNAT that the internet will become nearly unusable unless a majority of the services they are using support ipv6.