The point has already been made but it bears repetition. The RT callsign "Radio" is not a controller or even a FISO. I would hope that the training involved to gain either licence would ensure that Maydays would be properly dealt with. Air ground operators may not have either the experience or the training to respond adequately but I would also hope that the Radio Station's licensee would have a duty of care to provide training to the operators on what the implications are.