Author here. The point is that the stable APIs are rock solid, the design of its API versioning and the community's pace of delivery is a huge part of why it's all maturing so quickly.
That's all well and good until it isn't anymore. And to top it off, your recommendation is to either hire someone to manage k8s full-time or be at the mercy of your cloud vendor and hope that one day you don't turn up to work to find that the new update you weren't aware was being rolled out has just broken everything.
You can't ask a large-scale company to take a dice-roll on k8s for their infrastructure when the only promise of long-term reliability is "trust us not to make any breaking changes".
