I think that AWS are the "bad guy" here. I am happy to be proven wrong but they don’t have a track record of contributing code to the OSS projects they provide as a service. Whenever they are forced like it was the case with Mongo and now with Elastic they are using their power to have a competing OSS project. There is nothing wrong with this business wise but it's totally against spirit of OSS.

If you look at Red Hat on other hand when they decided that Kubernetes was the way to go for their OpenShift project they put lots of engineering resources for upstream k8s.