See also https://distr1.org/

How is this related?

Another proposal how distros (or at least a great distro in someone's opinion) should develop???

Interesting ideas but I wonder if there will be any distribution apart from Red Hat that would really go all the way to implement these ideas. While it seems to solve many security problems, supporting something along these lines seems very aligned with support contracts.

ChromeOS and macOS already use this sort of model.

I don't doubt that. But which Linux distributions would support it? Red Hat I am sure. Perhaps OpenSuse. But any others?

I can see NixOS doing similar things. It's all about declarative configuration.

Also very useful for embedded Linux distros, an A/B setup can help protect against update corruption due to power loss. If one of the two fails to boot, it can try the other, and retry the update.

Does that matter? If the idea flies and someone does the work (maybe the opposite order) a new one could emerge.

It does seem like something geared for the Red Hat model of installing millions of identikit machines.

The OS he is describing is an Android phone,and in my opinion this is a nightmare.

Like for exemple having to rebuild everything just to tweak (or fix) something. This is the path to throwable not easily hackable computers...

He says he wants it hackable and secure. I don't think he favors lock-in or throw it away when doesn't work.

The dilemma there seems how do you keep it quickly hackable for yourself but difficult to crack for the bad guys. What are your counterproposals if this is a nightmare?