This is the same logic that football players at high schools and colleges use to get favored treatment.
Look, in the military there is a chain of command. MacAurthur might have wanted to chew Truman out, but the chain of command works the other way.
Read the article - they cite a "stress counseling session" or some similar warm fuzzy activity.
From the other comments (quotes) I'd guess the Corporal yelled out that he didn't much need the chaplain's "counseling".
Guy sounds like he likes his job and resents wasting his training and skills while the rest of the team remains on line and under threat of similar punishment for it.