Isn't it contradictory that LMNT, a man who belongs to wood, makes up gold again, while Jin Mu is in the same situation?

Not contradictory. Fortune-telling doesn't mean missing anything. Sometimes lack of gold is better than no gold. You don't need gold to make up for it, but you need wood to make up for it. In that case, everyone can be a fortune teller. In fact, only those who have little talent and work hard can take the road of metaphysics.