Owned by Microsoft. The ones who have tried to destroy the core concept of open source for multiple human generations now.

Only partially helpful. For me, when I open up issues archive.org often only has the first post in the thread. Often the stuff is months outdated.

Don't get me wrong, the Wayback Machine is an incredibly amazing piece of tech and I use it all the time. But it's a less-than-satisfactory replacement for a working Github.