Roy Schestowitz calls to avoid GitHub since a long time. Here is a recent article:
No Excuses Left, Time to Leave the GitHub Monopoly
The libreCMC project doesn’t want it software get forked on GitHub and has put together What is wrong with GitHub?
In the long run I think we need to move away from GitHub. The website is small enough that we can recreate it with any other framework on any other plattform. And it will always be small. The work lies in the well thought-through explainations and calls to action.
The GNU website get translated page for page. The current approach with getgnulinux.org is meant for software. It seems to me like a big framework for little straightforward tasks. No need to seperate each paragraph and have several suggestions for a translation and to introduce the category unreviewed translations.