[BigJono]

> I've found that deeply nested structures make it more cumbersome to write reducers for.

Well, that's kind of his point isn't it? It's no more difficult to update a deeply nested regular Javascript object. But it is more difficult to update a deeply nested Redux data store.

> Having said all this, the approach commonly taken by React/Redux is certainly not a silver bullet for every problem domain, but then what is?

I'd argue that Redux is not just "not a silver bullet", it's an arrow head shoved into the barrel of a gun. You might kill something with it, doesn't make it any good.

I agree completely with the rest of your points though.