I don't read any mud-slinging in this post at all. What I read from it is someone (or a group of people) disappointed by Docker's current path and wanting to of

I don't read any mud-slinging in this post at all. What I read from it is someone (or a group of people) disappointed by Docker's current path and wanting to offer an alternative. Docker's received a lot of funding, and so it has an interest in building a whole platform. I won't say whether that is "right" or "wrong," but it may pollute the original, simple container strategy. The goal of this seems to be to offer a pure alternative. No mud-slinging there - just a different goal than what Docker has become today.