You are confusing simplicity of usage with simplicity of implementation. "dumb pipes" implement simple services for fixed or low per unit costs, the entire appeal of ready to use complex stacks like EKS is simplicity of usage.
It’s dumb in the sense that you can just move clouds without issue. You’re not using the secret special sauce that binds you tightly to AWS, everyone has a K8s and they’re all broadly the same.
