Hmmm...somebody’s ignoring the Congress’ role in our lack or preparedness...and generally making us look like tinfoil hat central.
I think the only real debate since 12/7/41 has been: did FDR and Marshall know in advance of the coming Japanese attack, and if so, did they adequately warn the Pearl Harbor commanders? And if the commanders were warned, did they respond appropriately?
Some things are known beyond dispute. For example, Short and Kimmel did receive a "war warning" in the weeks before December 7, but responded in ways that afterward seem ridiculous. Understanding how and why this happened helps explain "what FDR knew, and when did he know it."
As for the tin foil hats, well, yes, we do have a few of those. But in every case I've seen, wiser voices step in to set the record straight. In this particular case, the record is a good deal more complex than implied by the words, "sneak attack."