I heard recently that that Apple factory’s output was limited by the number of screws their local supplier could make per week. Can this be called a solved prob

I heard recently that that Apple factory’s output was limited by the number of screws their local supplier could make per week. Can this be called a solved problem? They just stopped depending on the US supplier. https://www.nytimes.com/2019/01/28/technology/iphones-apple-china-made.html https://www.nytimes.com/2019/01/28/technology/iphones-apple-...