Indeed, nor was LinkedIn, Yammer etc... there is no ‘new’ Microsoft - that’s the same old marketing spin they use every decade to try and make themselves seem ‘hip’ by blaming previous employees rather than changing their ugly business model and lack of ethics.
Well, they have "improved" Linkedin and Skype to the point that usability has gone way down, and resource use way up. It's easy to extrapolate and expect the same with github.
Fortunately we mostly use the repos, not any of the other features, so migrating away will be easy if needed.