OK, but please don't do what pg did a year or so ago and dismiss anyone who wrote "delve" as AI writing. I've been using "delve" in speech for 15+ years. It's just a question where and how one learns their English.
That's what makes it such a good giveaway. I'm happy to be told that I'm wrong, and that you do actually use the proper double long dash in your writing, but I'm guessing that you actually use the human slang for an emdash, which is visually different and easily sets your writing apart as not AI writing!
They’re simple enough key combinations (on a Mac) that I wouldn’t be surprised if I guessed them. I certainly find it confusing to imagine someone who has to write professionally or academically not working out how to type them for those purposes at least.