What does the Hurd have to do with the GNU Project as a whole? Haven't other kernels filled the role? It's possible to separate what the GNU Project does now f

What does the Hurd have to do with the GNU Project as a whole? Haven't other kernels filled the role? It's possible to separate what the GNU Project does now from what it was originally slated to do 30+ years ago. Providing a solid userspace and suite of libraries is no less important than providing a specific kind of microkernel.