No they don't. You just have to be selective. Condemning every period drama ever made because you don't like one is narrow minded. Young Victoria, for instance, as one of the most recently released, is a superb film. Bettany and Blunt's performances alone are worth the price of a ticket.
"He may look like an idiot and talk like an idiot but don't let that fool you. He really is an idiot."