Have you ever used it? The UI is like a bad copy of SourceForge anno 1998 (in fact, IIRC it's based on a very old copy of the SourgeForge code). Savannah is pretty much the embodiment of "open source people can't design UIs if they lives depended on it".
Also: some of those policies are ridiculous. "We require the “or any later version” formulation for the GNU GPL, GNU AGPL, and GNU LGPL." It could not host the most widely used free software on the planet: Linux.
What's wrong with the non-GNU side? The hosting requirements look pretty reasonable to me: https://savannah.nongnu.org/register/requirements.php