Why not compare it to a instead to a contemporary competitor - Nomad - which has simplicity as a core value? It has _far_ fewer moving parts than Kubernetes.
I was talking about the GP comparing their OpenStack install experience to something like Rancher, which is not an apples to apples comparison.
- on a side note - OpenStack and Kubernetes are not competitors, they are quite complementary collections of applications, that both have their place in a modern open source infrastructure.
K8S has a lot less moving parts - a couple of binaries / containers and etcd. The issue start coming up when you go beyond the single control plane node, and want a HA API.