I'm biased as an employee, but I believe that, all memes aside, there are some pretty solid commitments and statements being made that you should at least consider before drawing conclusions. My take on this is very positive and I'm excited to see how it evolves.
Without further ado ...
CEO Satya Nadella: blogs.microsoft.com/blog/2018/06/04/microsoft-git…
The Linux Foundation: linuxfoundation.org/blog/microsoft-buys-github-th…
Nat Friedman: natfriedman.github.io/hello
... and from his "ask me anything": reddit.com/r/AMA/comments/8pc8mf/im_nat_friedman_…