I mean yeah, this is transparently a BSD esque project it looks like, as in its pretty clearly tailored specifically to provide the kinds of features professional systems programmers and admins have been clamoring for from Linux for a very long time. Chimera is basically exactly what FreeBSD is but with a Linux kernel (for instance, clang/LLVM as the system compiler and lack of glibc as system libc), I'd imagine there is substantial overlap in our communities. I'll also add that I think these are worthwhile and long overdo technical improvements over the very substandard and strictly worse-than-unix situation in common Linux distros these days. So I support the project, if only to support something that can hopefully prevent Linux from completing its transition into utter shit.
You are spot on about this project I think in your analysis and I think it simply isn't ever going to be something everybody will want to use. That's okay, like you said, some don't want to participate in operating system development, you are mostly looking to be a user. There are plenty of free and open source operating systems that will mostly provide that kind of experience for you. The intent with something like Chimera is probably to dogfood these sorts of improvements so that other more user friendly distributions can use it as an upstream source in the future. So maybe one day we will see a more user friendly version of this.