Meh, I've said it before, I'm sure I'll say it again: on an airplane everyone is responsible for their own light and sound control.
Want it dark, put on eye shades.
Want it quiet, put in earplugs.
Stop being a 'victim' and take control.
Is it sometimes annoying vis-a-vis watching TV? Sure. But the other pax has the right to take a look at the glaciers or the clouds or whatever happens to be passing below. So politely ask that the person put the shade down half-way as a compromise.
So much passive-aggressiveness on airplanes. It's so