Most people shouldn’t be taking photos with tablets — if only because tablets offer worse photo quality than comparable smartphones. Your smartphone is a better camera, so whip it out instead. In crowds, people nearby will appreciate that you’re not blocking their views with your larger screen.
Whatever we think of it, people will be taking photos with tablets for years to come. There’s a reason tablets come with rear-facing cameras in the first place, and it’s a bit silly to complain when people make use of them. We can only hope that people use them responsibly and don’t get in everyone’s way when snapping those iPad photos.