Besides the ESP8622, Raspberry and their ilk, most microcontrollers are annoying to program.
Not just from a language perspective, that is going to C when you could just go to Lua or Python, but also from a programming and debugging perspective where more specialized equipment is required to program some , nevermind debug (OpenOCD).
Sure you _could_ use ChickenScheme, but actually getting the program on the microcontroller isn't any easier.
Good frameworks for simple RF interaction, as far as I'm aware of, are also horribly unhandy. If you know of one that isn't so, I'd appreciate if you were to share it.
It just seems a lot less painful to use Python's IP modules than using GNU Radio hooks, whether in C or Python.