If AI was trained on the internet, where the hell did all the em-dashes come from?

I swear the internet did not sound like this five years ago. Nobody in comment sections was casually writing: “That’s the thing it’s not about productivity it’s about intentionality.” Now every AI answer, LinkedIn post, fake founder thread, and “humanized” essay is full of em-dashes like everyone suddenly became a New Yorker editor overnight. That’s what I don’t get.