I like Ben Affleck as an actor. I don't know about him being rude, but to me, he looks depressed, just because he's an A-Lister doesn't mean he's immune to mental health issues.
What's the big deal? same practice with brown paper mushroom bags at the regular check-outs, some people prefer the brown paper bags to plastic ones, if you have nothing to hide why get annoyed? staff just doing their jobs.