They're just assholes. If software patents are repealed in the US they'll mourn the loss of the mainstay excuse with which they force earnest activist wankery on their users. If patents were the real obstacle they'd distribute the x264 decoder to/from locales where the patents are unenforceable, and/or fall back on system libraries.
Their present actions serve only to strengthen the Copyright, Patent, and Trademark status quo, because without IP assholery they would neither have a soapbox to stand on nor an enemy to fight.