I was responding to the original post about open standards. My point is that anything with an RF transceiver will never be as open as a standard PC with replaceable components. The radio portion will always be blocked off. That relatively small blob will always limit how much control you can exert over the device.

We don't have to look far. The embedded space with Arduinos, ESP32s and even RPis is a hacker's paradise. Yet the radio stack is restricted in all of them. For instance, it's not possible to take an ESP32 board and turn it's single antenna into a MIMO configuration, even if you make a custom PCB with trace antennas.