That’s cause ChatGPT — an A.I. tool — likes to use them more frequently than most people do. 🙂
Indeed, I used them all the time, either directly as em-dash (—) or I just use a double hyphen — when there’s only ASCII code available. Sometimes I write longer forum posts in a word processor, lest the forum resets or I want to change something before posting, so in those postings there may be typographical signs.