[LukeShu]

1. GNU Hurd is usable by those interested, but obviously still needs a lot of work to be generally usable.

2. These days, GNU Hurd isn't GNU's only kernel. GNU Linux-libre is a fork of the Linux kernel that removes support for non-free binary blobs, and is officially part of the GNU project.

3. There's a distribution called GuixSD, which takes the GNU package manager (GNU Guix) and the GNU init system (GNU Shepherd), and the choice of GNU kernels (GNU Hurd or GNU Linux-libre), and builds a complete system out of them. It's easy to make the case that GuixSD is the GNU system in everything but name. And even then, there's the ongoing possibility that GuixSD becomes "blessed" as the complete GNU system and renames to GNU.