I am not an LLM and use em-dashes and they were house style in my last 20+ years of employment. The whole em dashes == AI thing needs to just stop.
It is more about the document containing more than sixty of them. They are a completely legitimate piece of punctuation, but even prolific pre-LLM users did not tend to go that wild with them.
Speaking about style choices, I was curious why you sometimes use the 'f' from the Latin Extended-B block, U+0192, in your comments. I've never seen that before! (I'd meant to ignore it but you seem to be soliciting typography discussions...)