The masses would be much more inclined to accept and cower with a 'I always knew it' that way. Faced with the unknown, humanity panics and fires and stuff. Giving hints, now and then, obscure as they may be, prepares at least a minority of the population.
It's easier that way, isn't it? People that are convinced that there are countless conspiracies and whatfnord will be tempted to side with them, and be on the theorical winning side.
We're doomed.
Okay, that last part was pointless.
-Ze Devi8-