Citation needed on "breaking privacy". You have at least 2^64 IPv6 addresses per household, cycle through them and stop worrying about IP tracking.

Oh, and I can give citation on how NAT breaks something. Until the day we can magically remove application-level gateways[0] I consider NAT a fundamentally broken hack.

[0]: https://en.wikipedia.org/wiki/Application-level_gateway

That's not how any of this works.