Gosh, I wish the author wouldn't sound so arrogant presenting me his reinvented wheel.

What your Ansible is doing (looping over the inventory, imperatively executing tasks) is reinventing what a Kubernetes-internal Operator is doing after you asked it to reconcile your changes. Thing is: You're not only reinventing the internal thing, you will eventually recreate internal logic, e.g. some internal dependencies and knowledge "what to do in which order". Good luck with further developments on the Kubernetes upstream. Not cool.

Kubernetes does what it can, to give the user a declarative DX. You might not want to fight this. kustomize and some _trivial_ scripting is usually all you'll need. If you need more, consider writing custom Operators.