What I don't understand is, why can't people turn their electronics off just because it's the rule? Regardless of whether it interferes or not, it's a very simple request that doesn't disrupt anyone's life. You're asked to turn it off, turn it off. The whole idea that people think they're above the rules, or just choose to ignore them, really bothers me. Would you cheat a friend just because he wouldn't find out, or because he doesn't really need the money?
It doesn't hurt anything to play by the rules.