I understand people who dislike the social ramifications of having cell reception on phones (you thought the lady with the loud baby was annoying? Wait till a teen talks on the phone next to you the whole trip).
But the fact that the airlines think that a kid playing his iPod or GameBoy- devices with no wireless communication whatsoever- can bring down a plane and have to be shut off is crazy if we can have cell phone repeaters on planes in the UAE.
There is absolutely no reason that Airplane Mode would be insufficient during takeoff and landing for an iPhone/iPad.
I agree, but you also have to look at the practicality of implementing the rules. If the rule was "your device has to be in airplane mode" then would you expect the flight attendants to know how to check everyone's device? They'd have to know how to check Wifi and network settings on iPhones, iPod touches, iPads, Android devices, BlackBerries, PlayBooks, Kindles, Kobos, Nooks, MacBooks, Windows XP, Windows 7, Linux, ..... or would it be easier to simply say "Sir, please turn that off and put it away"?
As for wireless interference, sure it's unlikely, but I am reminded of the keynote where Steve Jobs had to tell everyone to turn off their WiFi because all of those devices in the same room were apparently interfering with the keynote demo.