Personally, as someone who uses it frequently, I would never use it in an “inter office” situation. If I’m “Ben the coworker” then I am just that.
But the minute that I have to be the professional “face of the city” or in any other situation where I need a level of formality that I am unaccustomed to, I will turn to ChatGPT every time.
I might be inclined to tell your friend that the more you put into it, the better stuff you get out. For example, I’ve recently had to write a formal letter to a judge. This is a theater that I am *completely* lost in, and I was tempted to hire a paralegal outright to help me write the letter. But then I decided to just treat ChatGPT like my paralegal. I wrote out at least 5-6 paragraphs of information explaining the entire background from start to finish of everything that I’m going through and even explained to “Chad” (my nickname for it) that I obviously didn’t want all this information in my letter, but that I needed the entity that was going to prepare this letter to understand the entire backstory that got us to the point of needing the letter in the first place.
The letter I got was brief, said exactly what I needed it to say, it was formal and professional but addressed my personal concerns as well, and when I showed it to a couple of people I know with legal experience they were pretty shocked at how nearly perfect the letter was.
So TLDR: you do get better results by giving it more to go on. If your friend is only feeding it “bullet points”, his results aren’t going to be as good.