Nope, not at all. Everything I said is true. v6 supports deploying in the way described in that article, and you can do it today if you want.
If you don't want to deploy v6 like that, consider why -- because the people who live in the world described by that article will also have the same reasons as you to not deploy it that way.
> If IPv6 gave tangible relief, then IPv4 today would not be an important mainstay of the Internet
No, that argument doesn't hold. v6 can give tangible relief even while v4 is an important mainstay of the Internet. You only have to listen to the people doing CGNAT, or the people turning on v6-mostly and seeing their v4 address use drop by 75% to hear examples of that.
Deployments of v6 reduce the pressure on v4, because they allow us to deploy new networks without needing v4 and because migrating existing networks frees up v4 that can be repurposed. This is also a benefit that's making v4 more viable that it would be without v6.
Plus you're making assumptions about the time needed to replace the Internet's L3 protocol. It's nice to fantasize about finishing it in 10 years, but that doesn't mean that finishing it in 10 years is realistically possible. Deployment of v6 is ongoing and v4's importance is dropping over time; you can't know what the ultimate impact of v6 will be until we're finished deploying it.
There was always going to be a long tail of v4-only hosts, no matter what we did. That's why v6 has a large number of compatibility methods for dealing with them (yes, including the method described in the linked article). It wouldn't be possible to deploy it at all if it didn't.
If you don't want to deploy v6 like that, consider why -- because the people who live in the world described by that article will also have the same reasons as you to not deploy it that way.
> If IPv6 gave tangible relief, then IPv4 today would not be an important mainstay of the Internet
No, that argument doesn't hold. v6 can give tangible relief even while v4 is an important mainstay of the Internet. You only have to listen to the people doing CGNAT, or the people turning on v6-mostly and seeing their v4 address use drop by 75% to hear examples of that.
Deployments of v6 reduce the pressure on v4, because they allow us to deploy new networks without needing v4 and because migrating existing networks frees up v4 that can be repurposed. This is also a benefit that's making v4 more viable that it would be without v6.
Plus you're making assumptions about the time needed to replace the Internet's L3 protocol. It's nice to fantasize about finishing it in 10 years, but that doesn't mean that finishing it in 10 years is realistically possible. Deployment of v6 is ongoing and v4's importance is dropping over time; you can't know what the ultimate impact of v6 will be until we're finished deploying it.
There was always going to be a long tail of v4-only hosts, no matter what we did. That's why v6 has a large number of compatibility methods for dealing with them (yes, including the method described in the linked article). It wouldn't be possible to deploy it at all if it didn't.