Objective Review: Immutable variants are the majority of Fedora Linux in use

[note: this comment is somewhat similar to the two other ones I just posted, but the topic matters to all:

Immutable variants present a major shift and some of them already work somewhat different wrt to how they are released (e.g. FCOS and its next, testing, and stable channels). Is our release model with it’s roots in the 90s a still a good fit here? Should maybe more of our immutable variants switch to the FCOS model and Fedora itself adjust its release model somewhat to better align everything?