Wow I never thought my iPad mini would be the next thing to annoy people. I'm sorry but I do tke pictures with it, and why should I not? Because its rude to others? Well it's kinda rude to constantly complain about what others do. First it's sitting middle of the row, then it's saving tables, now it's pictures with iPads? What's next? I think as long as people are not use them when they are not supposed to there is no problem, but I guess everyone will complain about something.
If you see me in the parks feel free to tap me on the shoulder for using my iPad as a camera but I'm not gonna stop, I can't please everyone every minute.
Not telling you to stop. Asking you to remember there are other folks around you. It becomes a focus, like the people who walk into traffic while they're texting, and you forget about the outside world. Take a pic with whatever you want. Please don't hold your tablet up in the air forever so you see the parade while we watch it through your screen.