"To the opinion that the glow of an iphone screen is distracting well then maybe you should tested from attention deficit disorder."
Even Same if the light/noise of the vibration annoy only people with adhd (which is not, you should turn you phone off. I have ADHD and I love theater. But now, it become unpleasant because of the public's behavior. Maybe it's not one "tiny light", but when everyone is thinking like you (phone, whispering, eating), it takes me a lot of effort to stay focus on the show.
I want to keep going to theater. I don't ask special requests, only that people follow the rules already in place.
So I will not stop to go to theater. And I will no stop to complain about people who have distracting behaviors for selfish reason.
Maybe I do not speak English as well as you, but I can perfectly pronounce the names of all characters of Les Misérables.