The choice of not running k8s is better than running k8s + virtual kubelet interfacing with AWS Fargate/etc. Let me give you an example. Some networking company in the bay area wanted to ship out some SDN virtual machines to clients. These guys shipped out these VMS with cloud foundry and bosh. This is a damn overkill.
Cloudfoundry/k8s is meant for deploying many applications that require horizontal scaling, etc.
Just one app with five containers or three VMS is not worth on k8s.