It is by no means "a myth". There's still Helm oddities, "annotations", CRDs, mutating web hooks, operators, etc. to comprehend before you have any idea of what the system is doing. All it takes is a random annotation to throw all your assumptions away.

It's a complicated mess compared to something like a Nomad jobspec. That's one of the reasons we decided on Nomad while I was at Cloudflare.