I have it down as the same as the person in front putting their seat back when you are all crammed into your limited space.
I'm a notoriously grumpy flyer, Ian and when the gentleman in front of me on my last journey over made motions of reclining, I leaned over and said in a menacingly clam voice, 'Do not even
think about it, Sir'. And he didn't.
As for the Skype/Facetime conversations - sorry Ian but people will want to share/rub their noses in it with absent family and friends and we now have the technology to allow it.