I agree that complexity is the problem and I'm avoiding Kubernetes like the plague. I set up a nomad cluster in a few days and it just works, has service discovery, and is perfectly simple to understand. But there are almost no books or courses about it, because Googles influence meant that everyone started using Kubernetes, and it's a mountain of complexity requiring entire teams to manage it.
I didn't really understand the rest of the article. I've never been very good at understanding what holistic means in practical terms, and what we should change specifically in how we work to become efficient.