No, Kubernetes doesn’t make applications portable, say analysts (theregister.com)

>Do not make application portability your primary driver for adopting Kubernetes, say Gartner analysts Marco Meinardi, Richard Watson and Alan Waite

Do corporations really take technical advise from management consultants?

While not plug and play portable, I was able to migrate my entire stack from gke to a bare metal k3s in about a day. Considering the alternatives, I'd say that's rather portable.