The day Kubernetes will have an LTS version supported for 5 years with no API churn, and EKS and other k8s managed systems will have an LTS version based on the k8s LTS plus a bunch of LTS addons supported natively, then I will agree. Actually we will probably live in a better world overall.

Meanwhile, the update stress of core k8s - even managed - is much higher than a good managed old fashioned (immutable) infrastructure.