ChatGPT for example almost always uses them. I'm sure they are more common in academic writing, but its now super common on boards like Reddit.
same thing happened with “delve” — these are just words and grammar, people use them
there is no accurate way to tell whether text came out of a neural network or not
Whenever I see that at the start of a paragraph I know that there's an 80% chance it was written by Gemini.
When looking at the context of a given text, use of certain words or punctuation, can very well indicate AI use.
The "original" example was delve. There is no doubt that AI (did, or still does) use this word at a significantly higher frequency than the average person. I would say the same about em dashes.
When browsing a Reddit thread about a video game, if you encounter numerous comments written perfectly, especially those containing indicators like em dashes, the word delve, or similar language, it certainly can raise the question: am I genuinely seeing comments from users who write this way in this specific context, or is this content more likely produced by an LLM?
Only typography nerds and professional printers care about things like these. Popular media, even modern professional media, hasn't been paying all that much attention.
No, I learned about em dashes in school, I just literally don't know how to type them on my keyboard and I'm too stubborn to learn how to.