ChainCatcher message, Ethereum co-founder Vitalik Buterin published an article titled "Follow-up Steps for Simplifying the Ethereum Protocol and Reducing Node Resource Load: Purge Explanation." Vitalik stated that EIP-6780 in the Dencun hard fork removed most of the functionality of the SELFDESTRUCT opcode, simplifying the protocol by eliminating complexity and adding new security guarantees. Therefore, Vitalik marked it as an important part of the "Purge," regarding other "Purge" actions that are currently taking place.Additionally, regarding other areas that may need "Purge," Vitalik listed precompiles, history (EIP-4444), LOG reforms, and migration to SSZ. Concerning precompiles, Vitalik pointed out that the demand for some precompiles is far lower than expected, and these precompile functions are a significant source of consensus errors and a major pain point for new EVM implementations.