I think the electronic device thing is getting out of hand. A lot of people actually text all the way to takeoff (and more) and many people's devices start to ding/ring on final approach. Worse yet, some actually talk on the phone. Or, they text back and forth without putting their phone on silent or vibrate.
I think by now we know it is not a huge risk when it comes to interfering with the plane. However, rules are rules and, if you want to cheat, at least put them on silent/vibrate.
I have no problem with the FAs being somewhat militant enforcing the rules - the problem is really too many FAs don't enforce any rules - people have huge "hand held" devices and leaving devices plugged in during takeoff/landing.