There’s a learning curve to these things. It always starts with type FunctionIWroteTodayArgs = …, which is useless and tells you nothing.
After a few iterations (this takes years) people gradually realize that the goal is to describe your domain and create types/interfaces/apis that are reusable and informative, not just a duplication of your code. You then get more useful types and things start really flying.
I guess what I’m saying is work on that with your team, not on ripping out tRPC.