That's about an entirely different symbol, the em dash

Em dash: —

Dash: ‐

The fact you don't even know the difference is why it was such a hallmark of AI. It was previously used primarily in formal writing like published literature and academia

It's actually become more common in layspeak though because of AI, but primarily because it's automatically used when doing 2 dashes on many modern systems

No, you are rude for spreading wrong information A lot of literate people write with ashes and no, I don't care who wrote what, it's a part of English, there is nothing to be said about it - deal with it.