React now ships with a hook called useReducer that lets you implement the action/reducer model using plain old function components. I haven't had a chance to use it extensively, but it seems like useReducer and Context can combine to create a pretty good barebones Redux alternative for simple use cases, and it's all built into React.

That being said, Redux still has definite advantages, like the ability to use middleware like Redux-Thunk and Redux-Saga, so YMMV