Well, if it ain't broken, don't fix it. Microsoft might have broken it some since the acquisition but I'd expect more in the move to Azure.
From the article:
GitHub has recently seen more outages
I would expect more during and maybe even after the move.
Anyway, we don't rely on github for our own stuff. It might be a bad idea to put your industrial secrets on a publicly hosted cloud IMHO. We run our own instance of gitlab in house but you could get by with more light weight solutions.
Let's hope the move goes smoothly for those relying on github! It might not be a bad idea to setup your own mirror of you github hosted stuff just in case although...