调度确实是最难去中心化的部分，因为它需要全局状态。现在的折中方案一般是调度器可替换、可验证，而不是真的分布式，至少故障时可以换掉。

This is the honest state of things. Verifiable and replaceable is a meaningful property even when it is not fully distributed, but it should be described that way rather than as decentralised routing.

那就该这么写 别用词模糊

Absolutely, clarity in terminology matters especially when evaluating system designs that impact trust and reliability. Using precise language helps set accurate expectations for users and developers about the limitations and capabilities of current implementations. Calling something "decentralized" should come with clear definitions or qualifiers to avoid misconceptions that could affect adoption and critique.