For god's sake - does the structure of this project do any good to the company, or is it just there to familiarise the developers with a variety of technologies

For god's sake - does the structure of this project do any good to the company, or is it just there to familiarise the developers with a variety of technologies so that then they could go to another company and boast having used all of them? Hard to debug binary-based RPC? You have picked the wrong technology for communication, having forgotten that you'd need to build the necessary tools in order to debug it. There's literally nothing wrong with binary protocols, except developers forgetting about the necessary overhead of re-parsing the passed data in the debugger. But it's not an overly expensive overhead, if the architect had taken this into account. Having heard this point absolutely not for the first time, the only question that remains is: who and why did make a decision to have it this way?