What do you think about merging these into one object? They're closely related.

Why do you use a function when the argument isn't used? It would be simpler to pass an object directly to set state.

What does type accepted mean?

You can merge these

inputBaseStateSelector is memoized based on threadID because every selector in it depends on the id. Here we don't need to do that so using memoization doesn't make too much sense.

This memoization and selector doesn't make sense. It returns just the provided value, but in a really complicated way. Instead it should merge values provided (something like this:)

What's this?

We can use simplified syntax

To achieve the memoization of the result we should not spread the states. Instead we should pass them directly and then merge inside the selector.