Not every game is about the same thing. Take deck-builders. In many cases, maybe even most cases, deck-builders are about merciless optimization and combo-building. You start with a deck of cards. One by one, you add better cards and prune away the dead weight. Sometimes your final deck will be even leaner than what you began with. At the very least, it will perform to greater heights.
Ta-Te Wu’s Art Decko is a deck-builder, but that doesn’t mean it’s about either optimization or combos. Rather, it’s about process. Flow. The act of shuffling and moving cards, watching those cards grow in value and power, and then shuffling and moving them again. It’s a peculiar sort of deck-builder. It might be too clever for its own good.