Chill, dude, it’s a joke!
Douglas MacArthur had a monumental ego which was key to his success as an officer & senior commander (Patton did as well). Fact is, Japan is governed to this day by the “MacArthur Constitution” which transformed a warlord-dominated society into a peaceful nation with a Western outlook.
Whether MacArthur thought himself godlike is pure conjecture. He did summon Hirohito to his HQ and had that famous photo taken which symbolized that a new order in Japan had been inaugurated. Showed their differences in height, too.
Plenty of MacArthur jokes were circulating among his officers and men in those days, as they do for anyone wielding command authority. Goes with the territory, IMO.
I know all about MacArthur and Japan. Hoss
Didn’t see any reference to a joke in your post