Sorry for the late reply but just got back in country.
The topic is the fall of the Philippines. What does Isabella, or his ego, have to do with the fall? I can't follow that logic. How would those also come into play with victories in Papua New Guinea or the liberation of the Philippines? He did everything he could for his troops. That is why I mentioned his request to use submarines to bring in supplies when the surface fleet left. MacArthur only asked for this to augment their supplies. Not to be the sole supply of the Army. Marshall requested the same but Hart would not do so. I gave one example of the Narwhal delivering a large amount of cargo in a short amount of time at night. Here are other submarine missions.
January 1942
Seawolf: 37 tons to Corregidor
February 1942
Trout: 3500 rounds of AA to Corr. And evacuated 20 tons of gold and silver.
Seadragon: Evacuated 21 Army/Navy personnel,, 23 torpedos, 4000 lbs of sub parts and 3000 lbs of radio equipment.
Sargo: Delivered 1 million rounds of .30 cal ammo to Mindanao.
Swordfish: Evacuated President Quezon and his staff and took on 13 torpedos.
Permit: Delivered ammo to Corregidor and brought out 3 torpedos.
April 1942
Swordfish: Had 40 tons of food headed for Corr.
Searaven: Had 1500 rounds for Corr.
Snapper: Delivered 20 tons of food to Corr. and evacuated 27 Army/Navy personnel.
Seadragon: Delivered 7 tons of food to Corr. and evacuated 22 Army/Navy personnel.
Sailfish: Had 1856 rounds of AA ammo but Corr. surrendered.
May 1942
Spearfish: Evacuated 25 people from Corr.
Other submarines that sent supplies or people to the Philippines included Argonaut, Nautilus, Amberjack, Gudgeon, Greenling, Tambor, Gato, Thresher, Trout, Gar, Guardfish, Grayling, Bowfin, Grouper, Kingfish, Cabrilla, Crevalle, Redfin, Harder, Seawolf. Stingray, Ray, Cero, Gunnel, Hake.
This does not include mine laying or reconnaissance missions which were also numerous. The most delivered by a submarine at one time was the Narwhal with 90 tons.
My position is that the Philippines fell because of, but not necessarily in this order:
1. The Germany first and hemisphere defense position limited what was available for the Philippines. We were systematically building up our troop numbers, trying to build up defenses in Alaska, Hawaii, Panama, the Caribbean etc. Additionally Lend-Lease ate into what was available. We were also trying to balance supplying troops or develop new weapons.
2. The Philippines were in the middle of building up.
3. The Navy's plan. The Philippines did not have the money or industrial might for a Navy and so it was understood that the U.S. Navy was to provide defense. The early Orange Plans called for only denying Manila Bay. Yet they did not defend Manila Bay. They did nothing to stop invasion. They kept PT boats and submarines in the general area as long as sub tenders could operate there.
4. A lot of politicians, Army planners, and Navy planners did not hold the Philippines in high regard. For some reason 7,000,000 Australians loyal to the British outranked 17,000,000 Filipinos loyal to the U.S. Even before the war the Navy talked about the importance of the Malay Barrier but apparently the Philippines did not fit into this plan. Once war came Admiral King repeatedly talked how we must maintain the line of communication with Australia. This is certainly true once war broke out but too bad they didn't have the belief of maintaining one with the Philippines.
5. In the end the concentration of troops on Corregidor gave the Japanese the opportunity to use them as leverage to get all of the rest of the forces to surrender. This is something I can blame MacArthur for. One of the reasons he didn't like the original Orange plan was because it could an did lead to entrapment. But entrapment could be avoided if the Navy stuck around.
So anyone who blames MacArthur but is silent on the above doesn't know the whole picture.