I will chime in with a slight anecdote. I have a direct report that speaks fine English but his written communications are just south of ideal. He asked me to help him by explicitly pointing out issues with his writing. I have been happy to do so but the process has really highlighted for him how refined my understanding of WHAT is right is contrasted to how poor my understanding of WHY it’s right is. More than half the time I’m forced to say “ that isn’t right, this is how it should be worded instead but I don’t really understand why”.

Language is a crazy thing.