The thought of losing Github to the startup graveyard is kind of scary. It was bad enough to lose Google Code and when SourceForge had their "great purge" of inactive projects.
GitHub is a $100M ARR revenue company that is probably (2 VC rounds where they had a lot of leverage) still controlled by the founders. They are in a healthy state right now, regardless of the high burn compared to most VC-backed companies. They certainly made a lot of mistakes, had changes in the leadership team and are successful despite that not because of it, but I don't see them dying anytime soon. $60M burn ove…
They're probably sounding alarmist to try maximising attention. :/