I've only recently started using AI, and have discovered my use or rejection of it is predicated on my feelings for the task. This argument of "authenticity" really resonates. I'm a manager, so when I'm sending emails to a customer or talking with one of my reports, I care deeply - so you might get some overwrought florid prose, but it's my overwrought florid prose. On the other hand, I have to lead a weekly meeting…
Probably related to why I can copy a piece of code from elsewhere (with sufficient work to verify it does what I expect and only what I expect) but I don't copy a quote and use it as my own. My words are my words. My code doesn't have the same guarantee.