It points out how some things has gone unconsidered in the "status quo", but rather then just rant about it, shows how it can be different.
It might put some lesser known code bases into the public eye.
It might iron out compatibility issues with e.g. the linux kernel and "the good parts" of POSIX/unix-philosophy. Which is why I like Alpine and Voidlinux for being such complete systems, without hard dependencies on GNU-components (I think the GNU project, especially many of the individual code bases, are awesome as well).
And while there are benefits of both statically linked applications, an dynamic linking, I do find it for the best if that can be a realistic choice of the user, whatever program of library you want to use. And most big applications simplu can't be totally statically linked as of now.
It's a form of "greenfield project", but still leveraging existing components.