Agreed and, as a diver, sailor, skiier, but not really a hiker, I am both familiar and comfortable with location beacons, and have carried one when diving and sailing.
However, I don't carry one 24/7, whereas it is rare for me to be without my phone and my W3W app.
In addition, most people won't be familiar with location beacons, and maynot even know what they are, never mind carrying one, whereas they will be familiar with apps, including map apps and GPS, and will more than likely have a phone with them.
Notwithstanding all of that, along with the negativity of those like Alan* ( ), the reason I posted the video was because W3W is much more than an aid to rescuing the surfer with his phone. It gives a precise address to millions who do not have the luxuries that we have, and could definitely be lifesaving in many circumstances.
* de Enfield
I think the imperial unit was used for Alan's* benefit. He has made it clear that he would like to turn the clock back half a century more than once
* de Enfield