Sorry, I think you misunderstood me... what I meant was - what is the purpose of the TLAs continuing with their raids if everyone knew it was about happen. That's what I meant by fear mongering.
Other than that, I agree, I don't see what the point of this would be. Especially when there was some early warning. It is possible that the warning from a few days ago is entirely unrelated to this incident, though.
Maybe this is related to the Sony hacks, the authorities could know about a forthcoming data leak or threat. Taking away a major source of anonymity could prevent the information getting out.