Hey Gert... do two... they're actually small. Every instructor should have their students demonstrate a practice "PAN... PAN... PAN". It's a two way street... The student is able to learn what to do if a problem arises, especially during the early stages of solo and cross country flying... and the controller can practice their procedures too.
The fact is, the abusers of 121.5 are here to stay, and there’s nothing anyone can do about it.
At the end of the day is it such an imposition to practice and promote safety?