Well...... getting your life in all that facade isn't going to make you give humanity a single piece of anything....... and that man after Marco died is surely going in the right direction..... with all the things they've seen it's a good choice....
but it's just barely the truth. a magnificent lie incorporates as much truth as it could. a great general is a great liar. this is no shounen inspirational manga. this is a brutal take of a soldier's life. it inspires us in a different way than a roaring speech. it freezes the hair on our skin because it rings true, it is relatable.