Johnson was moron. A political hack who pitted one group of advisers against another within the White House and brow beat everyone to get his way, no matter the truth of the matter.
Read Dereliction of Duty by H.R. McMaster to get a good idea of what working for Johnson was like. And he was a Stolen Valor kinda guy to. That Silver Star he received from MacArthur was for being a congressman, since he never saw combat.
from Wikipedia:
Lyndon Johnson said his B26 was also attacked by Japanese fighters but survived, while others, including other members of the flight crew, claim it turned back because of generator trouble before reaching the objective and before encountering enemy aircraft and never came under fire, which is supported by official flight records.[22] Other airplanes that continued to the target did come under fire near the target at about the same time that Johnson's plane was recorded as having landed back at the original airbase. MacArthur awarded Johnson the Silver Star, the military's third-highest medal.
No one else on that aircraft received any medals. Johnson was merely an observer.