Why? I view being able to do this as a huge advantage. Don't want to lose instance store state just for an OS update and love the kubernetes operator interface to be able to do this. The kubernetes operator also operates at a cluster level which means we don't need to write scripts to churn ASGs. It is eyebrow raising that they have only enabled this for Kubernetes and not ECS. I suspect that this is one of many signs that that the inferior and lock-in prone ECS service will be deprecated soon.