Considering what kubernetes actually is - there's a fantastic use case if you really did port it to the browser. So when someone says they did it, I kinda expect that they literally ported that containerization logic to JavaScript.

That would mean I could run an image of an OS like Linux in browser JavaScript. It's a wild thing, but that's what porting literally means! And what I expected with that title.

Think of like a PlayStation emulator... the game itself does not need to be ported - just as if you really made a k8s port you would not really need to reinvent Linux in JS, only be able to run it

A PSX emulator can be said to have been ported (e.g. Tomb Raider has been ported to the browser even though it relies on underlying C++) because it ultimately runs fully 1:1 in a web page. It's a port as far as I'm concerned.

But a k8s port that doesn't do what k8s does isn't a port IMO

K8s doesn't run containers, container runtime environments do.

K8s sits on top of those and orchestrates them.

But Kubernetes isn't postgres or ruby or containers. It's the orchestration service. Your comparison doesn't make sense.