Why would it be "bash possibly with some hcl/cf/ansible mixed in"? There's provisioning to be done using terraform or pxe installer, packages to be installed, c

Why would it be "bash possibly with some hcl/cf/ansible mixed in"? There's provisioning to be done using terraform or pxe installer, packages to be installed, config files to be copied, unit files to be edited, services to be started. That's 100% configuration management, no need for bash, python or go. Although you will get with any solution at a point where text configuration is too large and you get into templating and then coding, and you will get there with K8s as well - see pulumi, dhall, etc There's people who can handle complexity with an elegant solutions and people who can't and search for silver bullets like K8s.