Beast,
I'm sorry to say that while this attitude should be fought at every turn, doing it directly is rarely going to convince the individual. It's a bit like trying to convince Eddie McGuire that now is not a good time for an ad break......
Far better to identify the places the campaign is directed and counter his argument with fact and logic.
Simply put, whinging about airports are an easy way to;
a) get your ego stroked
b) further your "profile" for other tasks in live
c) raise your self esteem by demeaning others. The drama over the off target Gruen Transfer ad is a case in point.
Never mind, he'll go away when he realises he's being ignored.