Except that people saying this was happening were labeled as conspiracy theorists by many. This is what people always forget when they pull out the "Yeah but we already knew that" no you didn't, you might have suspected it but there would always be plenty of people ready to shout you down saying "We don't know that for sure", "That has not been confirmed", "Take off your tin-foil hat".

I'd wager that the people clutching their pearls now talking about people being put at risk due to the leak are pretty much the same people saying it wasn't happening before the leak.