The lack of em dash usage in popular culture speaks more about typical people than it does about whether a text's author was an LLM. In fact, the average person has never even noticed—let alone considered—that the em dash exists. If they've read for 20+ years, they've seen at LEAST hundreds of them.

Imagine being an NPC (a human bot), flattering yourself with the thought that people who understand the language are language bots...