Someone did just that!

Show HN: Hacker News em dash user leaderboard pre-ChatGPT - https://news.ycombinator.com/item?id=45071722 - Aug 2025 (266 comments)

... which I'm proud to say originated here: https://news.ycombinator.com/item?id=45046883.

Ha ha, my first use of an em-dash on HN was 2016 which was the year I started my account.

I'm safe. It must be one of you that are the LLM!

(Hey, I'm #21 on the leaderboard!).