For what it's worth, I would agree that the problem is over-hyped. One thing to remember though is that there may be a difference between the effects associated with up to a dozen mobile phones inadvertently left on and 330+ deliberately left on.
For the time being, the regs say no, although change is in the air (boom-boom).
For the meantime, I remain fascinated that so many people can become so massively cross because they are unable to use their phone for a few hours, or in the case of pico-cell aircraft, for a few minutes on departure and approach.
I'm not being cute - It really is a mystery to me. I'm coming to believe that for some, any kind of restriction is an unacceptable imposition. As I get older and grumpier (it'll happen to all of you in the end, believe me) I find that there are more and more things, and people, that are genuinely unacceptable: The use of mobile phones is some way down my list and has several noughts after it.