The concept mentioned by Fukuyama is the "first person" in history, that is, the person who fought the battle of spirit for the "desire of superiority". This battle of spirit has nothing to do with the issue of food and clothing.
When the first man in history disappears, so does the "desire for superiority"; that is, the desire to fight for the spirit of "I am stronger than the others", and there is no real important thing in life. question. Because all are equal, there is only a feeble concern for personal interests and desires. We become the "last historical man": we only care about the house, car, money, and fitness, and we no longer have the desire and necessity to fight bloody battles.
That's the rationale behind Fight Club: we stop thinking we can be stronger, have a "desire for superiority," and fight for it, then life itself becomes meaningless. We need to fight each other, prove ourselves stronger than others, and sacrifice blood and order. In the end, destroy the order and make everyone "the first" again: a bloody fight to the end for courage and fame.
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