I think calling that comment "FUD" is a bit harsh - there is no doubt that casual users relying exclusively on smartphones for navigation without the ability to fall back on a traditional map and compass is a real problem. I've seen plenty of reports of this in the UK and seen warnings about it in the Alps.
"The root cause of getting lost is usually a lack of adequate navigation skills, no matter what technology is being used. In many cases, walkers do not have the skills to read a map or navigate effectively. Some mistakenly think that carrying a Smartphone or gps means that they do not need these skills, which is a recipe for disaster, for all the reasons given above."
"The root cause of getting lost is usually a lack of adequate navigation skills, no matter what technology is being used. In many cases, walkers do not have the skills to read a map or navigate effectively. Some mistakenly think that carrying a Smartphone or gps means that they do not need these skills, which is a recipe for disaster, for all the reasons given above."
http://www.mcofs.org.uk/navigation-gpsandsmartphones.asp