You mean like AWS' EKS? That spares you kubeadm stuff in setup. Arguably complicated upgrade, because you're less familiar with what you have/need/rely on (their own upgrade docs point you to upstream changelogs/release notes etc.). You're still left with a kubernetes cluster to deploy stuff to, decide how stuff scales, etc., which is a lot of what is generally meant by 'DevOps' anyway?

The lower level infrastructure/platform/kubeadm type stuff isn't really 'Dev' related at all.