How many people understand how the Linux kernel works from top to bottom? There are more than a handful of cloud providers (AWS, Azure, Microsoft, Alibaba etc) that offer a completely managed Kubernetes experience, for most folks, this will be good enough and you don't need to understand everything in order to take advantage of Kubernetes, similar how you don't need to understand how the kernel (think POSIX) works: https://www.cncf.io/certification/software-conformance/