Its a bit of a pain, but you can definitely switch to CoreDNS on GKE if you need to. Also as someone who has used GKE, EKS, MicroK8s, and Minikube, I would say that the easiest to use implementation of Kubenetes as a Service is GKE. Not saying its easy or the worlds most thought out product, but I gotta give google just a tiny bit of credit for at least being easier to use then the competition.