Ahh I get it... He's talking about the emdash. An elongated hyphen—used in just about every AI-generated post but seldom used by humans. [...]
Umm... completely out of topic... like... waaayyyy out of topic, but --well, have to ask, intrusive thought win-- how do you produce emdash? Through normal keyboard? I've been trying to do that to narrate my thoughts-in-between-thoughts in many of my posts, and I symbolize it with double-dash [as I deliberately show above]