The most centralized of all is bitcoin, it is well known it is controlled by very few chinese individuals. Eth is not centralized, and dwarfpool is close to 50% but the pool is made of bunch of small miners mining on it (like me), who cold move at any time to another pool.
What if those chinese miners will turn on to ETH? Then its double centralized dummy. But those big miners are not stupid to mine that ponzi scheme shit coin.