Earlier quoted context omitted.
To be honest, we may never get the full truth here. Both sides have their reputation to uphold.
There's a lot of vague-tweeting and theatrical "showing support" for both sides. Which is fine, and expected, when beefs like this go down, I suppose. Not knowing any of the parties involved, I just can't pretend to know more about this than what is publicly visible, which is essentially nothing.
I haven't seen anyone 'showing support' for github. Just 'being disappointed' in them.