All fair comments Malabo but you have to reach the private owner or 'cheap pilot bastard' as referred to in the AVweb video - they appear to be the ones who will baulk at spending the money and doing things properly - ironically they are the ones most likely to need assistance when it all goes wrong.
I have spent a big chunk of my career rescuing, or sadly recovering the bodies of, people who didn't think it would happen to them - some just unlucky but plenty just foolhardy or ignorant of the dangers - this guy seems typical of this mindset.
Whilst the coverage from the Iridium satellites is impressive, your tracker still needs to have a clear view of the sky to see them so not infallible. I would have a belt and braces 406 beacon as well.