Quote: the ability of Japanese troops to take revenge actions for a landing on the homeland could not be discounted.
Actually, it can. Japan's merchant shipping was virtually annihilated by 1945. What wasn't sunk/damaged was stuck in port due to fuel shortages. Those isolated garrisons were in little position to undertake offensive actions.
Part of McArthur's strategy was to bypass larger IJA garrisons and leave them to wither on the vine. It was largely successful due to American sea and air superiority.
