"And I conceded that point."
Then we agree.
Now, if you'll take the time to study the subject (i.e., The Pearl Harbor Myth), you'll find there was a LOT more going on behind the scenes than most people realize.
What this whole conspiracy BS misses is that no one---NO ONE, anywhere---thought Japan was militarily capable of more than one offensive operation at once. And yet they simultaneously continued their advance in China, attacked Malaya, and attacked Pearl Harbor. Not even Jimmy Doolittle, who correctly predicted Pearl Harbor in the 1920s, EVER thought them capable of that range of multiple operations, and for that reason, all discussion of PH is just silly. If they weren't occupied elsewhere, the conspiracy theories might have held some water (lacking real evidence, of course).