I can appreciate that the FA may have been unpleasant -- but -- I would've loved to have seen them haul that guy off the plane.
Cretins who yak all through the safety announcements are a major pet peeve of mine -- especially those who do it ostentatiously, as if they have to demonstrate how used they are to air travel. You just know that in the chance of a real emergency they'd be the first to freak out, too. I bet the FA on your flight had seen it 100 times before and decided to do something about it -- and I bet every other pax on your flight pipes down from now on during taxi. And I say that FA rocks, PMS or no PMS.