I had a very weird sensation while reading this where I was shaking my head disapprovingly at this article. Specifically when they were talking about the commoditization of DevOps.
Speaking personally, I used to work on a Platform Engineering team for a major multinational that rhymes with ay-do-bay. And their requirements for the workloads that we needed to be built and hosted where very unique because you have teams running completely different languages and toolchains, esp. from acquisitions. I can argue there that the template K8s setups wouldn't work.
In the author's case, the only reason why they feel the way they do is because we finally have some sense of standardization on what Infra looks like for most companies. It's no longer a question for most folks if they should adopt Docker, we have accepted images into our lives. Same for K8s (after a certain point of scale). So uh... yea. Catchy blog title to sell some thin layer on top of K8s in which it doesn't solve the root issue that they are talking about.