Where do you think the LLMs got the emdash from? When I worked as a magazine editor we took good care to discern ndash and emdash in printing. In Germany it is a Bindestrich (which links words, hence "bind") and Gedankenstrich (this is where you have a pause in thinking and continue the sentence afterwards).
Like i said, the dash IS a thing, and only in practice used by "experienced writers", common folk NEVER use it. LLMs stole all the books, so obviously the AI spits out dashed like there is no tomorrow.
You cant argue about this, just looking at github, i never saw dashes used pre AI. Today you see a dashes in code comments, PRs, issues etc EVERY time. Its all AI generated.
