As with state, serializable actions enable several of Redux's defining features, such as time travel debugging, and recording and replaying actions.
标题下面第一句就回答了
> For this tutorial, we assume that you're using Redux Toolkit and React Redux together, as that is the standard Redux usage pattern.
RTK(Redux Toolkit) 已经是目前的 Redux 的标准写法了,该抛弃以前的这种旧写法了。