Flight attendants everywhere will hate me for this, but ... having your electronic device on below 10,000 feet is not an immediate danger to the flight.
I've always hated this rule and can't understand how it has managed to stay in effect this long. I seem to be in the middle of something important every time it comes into effect and it wastes a ton of my time. Hopefully we can abolish this useless law soon. In the meantime it just creates unnecessary fear, and people have been hurt because of it.