So cruising at 1000' agl I have an engine failure. Do I get out my sat phone and start dialling AMSA?
I have tested 121.5 over the last three decades and even in remote ocean areas you get an immediate answer 9 out of 10 times.
AMSA are clearly taking advice from CASA on this. In this case the advice is wrong and will more likely result in an unheard mayday call