I just did a cursory on the timeline you refer to.
While I have no issue with the chronology,
I would take issue with any speculation that Roosevelt
consciously and deliberately left Pearl Harbor unprepared;
that I believe was simple incredulity as to the prospect of attack there,
(as on the Panama Canal which was also suggested as a target),
ignorance, stupidity and bad luck.
As to McArthur, even his biographers can’t explain some
of his lapses, which include delays after Pearl Harbor
which left his air forces subject to destruction on the ground
at Clark and other airfields in the Philippines.
I have read Toland’s account in “The Rising Sun”.
But again, What if Roosevelt had just kept out of it
as the overwhelming majority of Americans wanted?
What was our concern in Asia? In Europe?
Why did it matter so much that he and his kind
felt the need to go to just lengths against the
wishes of their countrymen? And were they
justified. Seems eventually Russia would have
won or at least kept Hitler in check. Japan
was already stuck and trying to find an honorable
way to get out of China. What the pressing need
that would eventually cost 350,000 Americans
their lives overseas?