Sound advice. Sadly, the industry is by and large ignoring it, and the median k8s cluster size is single digits. There are a few elephants who run thousands of nodes, and at that scale the benefits outweigh the complexity tax. But a huge chunk of the industry is tiny and has been convinced they need to k8s, while another chunk of the industry is trying to figure out how to scale k8s down, on the faulty hypothesis that you can then grow effortlessly.