I fully agree. If you come from "old-school" administration, Docker and Kubernetes seem like massive black boxes that replace all your known configuration screws with fancy cloud terms. But once you get to know them, it just makes sense. Backups get a lot simpler, restoring state is easy and keeping things separated just becomes a lot easier.

That being said, I can only encourage the author with this plan. All those abstractions are great, but at least for me it was massively valuable to know what you are replacing and what an old-school setup is actually capable of.