There is a world of difference between well-written human text and sloppy walls of AI-generated text. There's nothing wrong in using hyphenations or emdashes -- I use them myself! That's not the point of my comment.
What does it mean when prompting SoTA LLMs prone to slop to be concise and precise, with respect to context at hand, not work at all? Anyone benchmarking that?
Whether we like it or not, em dashes are effectively verboten in online discussions and blog posts if you want people to take you seriously. If the idea that excessive hyphenation is an AI tell gains traction, it too will become impossible to use without ruining your credibility.