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> for human population which is going plateau soon

It's not an address per person any more, but an address per IoT device or connected sensor, which might continue to grow even if population doesn't.

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Even with IPv6 we are not abandoning NAT. There are good reasons to have a single point of access / control. Do we really see billions of devices connected independently to the internet?

Yes. And we are abandoning NAT, we're just not abandoning firewalls.

NAT still exists for IPv6. There is NAT66 and there is NPTv6. While no doubt there is less need for it than with IPv4, there are valid use cases for both.

Yeah I meant in general. Of course I know there are use cases for NAT that are valid regardless of IP version in use.

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