Am I the only one that gets wound up by this? I've noticed it so much in recent years. The play/concert ends and the hard-working performers come out for their curtain calls. Most of the audience are clapping them hard, but there's always some who just get up and walk out, like they have a bus to catch (maybe they have, but even so ...). Once one does it, more follow and before you know it there's a mini exodus going on.
Is it becoming more acceptable? To me it's like the opposite of applause - sending a strong visual message to the performers that you didn't appreciate the show.