Simplicity makes sense, of course. I just hadn't considered a grpc-only world. But I guess that makes sense in today's Kubernetes/node/python/llm world where grpc is the glue that once was SOAP (or even CORBA).

Still, stateful protocols have a tendency to bite when you scale up. And HTTP is specifically designed to be stateless and you get scalability for free as long as you stick with plain GET requests...