Worse than using a binary protocol and an IDL, I think, are the myths that gRPC proponents seem to believe: e.g. you can't delete fields and all fields are opti

Worse than using a binary protocol and an IDL, I think, are the myths that gRPC proponents seem to believe: e.g. you can't delete fields and all fields are optional, ergo <voila> you now have guaranteed backwards compatibility.