Whenever I see an em dash (—), I suspect the entire text was written by an AI.
replies(7):
This article does not appear to be AI-written, but use of the emdash is undeniably correlated with AI writing. Your reasoning would only make sense if the emdash existed on keyboards. It's reasonable for even good writers to not know how or not care to do the extra keystrokes to type an emdash when they're just writing a blog post - that doesn't mean they have bad writing skills or don't understand grammar, as you have implied.
Incidentally, I turned this autocorrection off when people started associating em dashes with AI writing. I now leave them manual double dashes--even less correct than before, but at least people are more likely to read my writing.