Don’t be surprise. It is very natural movement from monolithic style to MSA. And it is not sooner issue. Just happen to late 2021 as a plan. And most of customer doesn’t impact your system. Due to many of service provider (GCP, AWS, AZURE, OpenShift, RKE and so on) already change their Container Runtime from (a little noisy?) old version of docker to light Container Runtime. I.e. new version of docker or others. And also it is no no no impact to your current image because you already use containerD monstly and what if you use old version of docker and also k8s said support old dockershim with there supportive method.