What comes to mind are the exceptions. Writing for example, is often as much about the polish applied after initial drafting is done. Perhaps for an academic a

What comes to mind are the exceptions. Writing for example, is often as much about the polish applied after initial drafting is done. Perhaps for an academic assignment in a class, that's not a big deal, but it would be a huge deal for... marketing copy, fiction writing, scientific papers, journalistic reporting, screen-writing... etc. The other possibility, where asking for polish is an attempt to be helpful, not a power-play, is where the professor is attempting to train the student to produce better work in the field of speciality of the professor. This is actually part of the professor's job. In that case, it would be unreasonable to attribute malice, and instead it should be considered a simple case of two people optimizing for different things.