Whatever, man. It's a discussion. Nothing more. When I see people do what the OP discribed, I simply roll my eyes, look at the FA in the galley with that "what a douchebag" look, and move on. Nothing more.

Doesn't mean I don't think people like the guy he described are rude. Do it once? Whatever. Do it twice on one flight? Angry, rude guy. Eye roll from me, then moving on.

Will I discuss this rudeness on a forum? You bet. It's a FORUM. What else are we supposed to do in here?