Does it seem counter-intuitive that a place like Buffalo Wild Wings, where you primarily eat messy things with your hands, would put iPads at their tables? Yeesh.
As for the question, I would hate it. I much prefer to order from an actual person, to make sure we both understand exactly what is being ordered and what (if any) substitutions are going to happen. Although when I'm eating out alone, I wouldn't mind something to do while I sit there that wasn't staring at a TV I can't hear or wearing down the battery on my phone amusing myself until my food comes.