My workflow right now is to use AI for rough draft and developmental editing stages, then switch AI from changing files to leaving comments on files suggesting I change something. It is slower than letting it line/copyedit itself, but models derp up too much so letting them handle edits at this stage tends to be 2 steps forward 2 steps back.
They aren't reliable at anything I guess, but for English I have nothing else, and they are better than nothing. I do wish they would use a more effective way of highlighting their suggested changes, such as italics for new text and strikeout for deleted text.
Unless you are paid by the word, I struggling to think of why you would use an AI to create new text. The facts will be wrong, the tone won't be yours. "If I had more time, this would be shorter" is a truism here - AI can spit out an enormous amount of text in a very short time, text could be cut down to a fraction of the size with a bit of effort.