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!
There’s a subculture effect: this has been trivial on Apple devices for a long time—I’m pretty sure I learned the Shift-Option-hyphen shortcut in the 90s, long before iOS introduced the long-press shortcut—and that’s also been a world disproportionately popular with the kind of people who care about this kind of detail. If you spend time in communities with designers, writers, etc. your sense of what’s common is wildly off the average.