You sound like you're arguing that vague rules are best because they allow the DM to pretend they are playing RAW for the benefit of the players all the while secretly making up their own way of doing things.
That seems to be a very antagonistic way of playing to me.
The DM is always making up the rules as they go along. Though it is better to just be honest about that fact.
I would really like to read some a book with extra annotations, but more for fun. I kind of doubt that it would make the rules clearer.