Earlier quoted context omitted.
If everyone had this mindset we would be running our workloads on Microsoft Windows by now. GNU/Linux was also "risky" at some point.
Linux grew up in the bedrooms of teenagers. It was risky in the era of 486 and Pentiums. The environment and business criticality of a $1-2M rack-size computer is quite different.
This appears to be a much better system than VMware, is free as in software, and it builds upon a free software operating system with lineage that predates Linux.
I say this in the most critical way possible, as someone who has built multiple Linux-based "cloud systems", and as a GNU/Linux distribution developer: I love it!