Tech is particularly famous for having similar names for very different things.
The authors of the GNS IETF draft appear to be associated with GNUnet[0], which is an official GNU project. However, in defense of the OP, there may be a level of indirection here - there's no clear link between the GNU leadership and GNS: just GNU - GNUnet - GNS. It could be a purely GNUnet initiative.
It is a project under the GNU umbrella. That said, that's a loose association (i.e. it's not like GNU projects necessarily share developers, project leadership or even much in the way of infrastructure), so it does seem needlessly click-baity. (Next up: "GitHub: A Heuristic for Bad Cryptography"? - although GNU projects probably have a bit more cultural overlap)
The authors of the GNS IETF draft appear to be associated with GNUnet[0], which is an official GNU project. However, in defense of the OP, there may be a level of indirection here - there's no clear link between the GNU leadership and GNS: just GNU - GNUnet - GNS. It could be a purely GNUnet initiative.
[0]. https://en.wikipedia.org/wiki/GNUnet