Ethereum's need to scale has led to the development of Layer 2 solutions, with ZK/OP rollups emerging as key players, forming a short-term OP and long-term ZK consensus, highlighting ARB, OP, zkSync, and StarkNet as major contenders. Web3 users prioritize privacy only when it provides economic value. FHE's encryption cost further burdens the already low on-chain efficiency, and large-scale adoption is feasible only when significant benefits justify the cost. For institutional clients needing public blockchains but unwilling to disclose all information, FHE's ability to display and trade ciphertext is more suitable than ZKP.