Emergency seat entitled

Just boarded Phoenix to Nashville with my wife. A18 and A19. We aim for the emergency extra leg room seats as we're both tall, I'm 6ft3. A guy is sitting on the aisle seat with his ipad on the middle seat, my wife proceeds to tell him we're gonna sit there (middle seat and window). He says "you guys know there are 40 empty seats on this flight". I said thanks for that info and proceeded to try to sit. He wouldn't move his ipad, I had to ask twice to move his stuff, and had a terrible attitude. My wife added that these are extra leg space seats - we sat there anyways, it's a 3 hours flight. The entitlement of people is beyond crazy. If you want to save seats, at least don't try to save the emergency row ones for your ipad. Hope he gets the day he deserves. I might need to use the bathroom more than usually.