Do you also avoid Android and every Android derivative because of SELinux?
Yes. I personally build my own operating systems, build the hardware as simple as possible (usually ESP32) and build my own internet (XPRS is an example) running on BLE, reticulum/i2p over internet, radio, LoRa and radio.
This clip is from an operating system that I created from scratch a few years ago in what would later be called CYD (Cheap Yellow Display). In the meanwhile things evolved, now with satellite based text messages at the moment.
This clip is from an operating system that I created from scratch a few years ago in what would later be called CYD (Cheap Yellow Display). In the meanwhile things evolved, now with satellite based text messages at the moment.