I am completely agree with your opinion for 333ksym DVB-S2 and 100% support this idea and all the people who share this idea !!!
But we all know that there are still many pensioner among us who want absolutely nothing to do with a computer, they just want to TX a switch to ON, turn ON the camera and send !!
Translated by google.
This is exactly what Portsdown is. A transmitter without computer features. It is based on a PI of course but can order an SD card image. All controlled from a touch screen. G8GKQ and his team have developed an incredibly flexible system anyone can use.