Core Viewpoint - Vitalik Buterin emphasizes that protocol simplicity is essential for decentralization, self-sovereignty, and long-term security [1] Group 1: Protocol Design - High decentralization can still lead to user reliance on a few experts if the code is bloated and complex, which undermines sustainability [1] - Buterin advocates for Ethereum to implement a clear "simplification/garbage collection" mechanism to reduce unnecessary features and complex dependencies [1] Group 2: Long-term Development - Strengthening invariants and delegating less-used but complex features to the contract layer is recommended to prevent protocol bloat [1] - This approach aims to support long-term stable development of the Ethereum protocol [1]