Entitlement. That's another issue altogether, and one that you can probably see in detail under Omni/PR.
I went from Kindle to Nook Tablet. Since it's backlit, I have no issues about having to use an overhead or portable clip on light. I did, however have a person tell me that the glow from my Nook was disturbing them on an overnight from HNL to DEN.
I think it goes back to the old expression, "Your right to swing your fist ends at the point of my nose." Where do your rights end and your row-mate's rights begin, and VS VS. When I sleep, I put on a mask, and put in earplugs. This way if someone is watching a video or turning on lights, or making some noise, I'm a bit isolated. It's my responsibility to try and "share" this space with my co-passengers, and their responsibility to do the same.