Apparently the use of m-dashes is now seen -- by some -- as a mark of genAI writing?
https://www.rollingstone.com/culture/culture-features/chatgpt-hypen-em-dash-ai-writing-1235314945/
Man I dunno I use *ton* of m-dashes!
In fact a couple of years ago I created a little web tool that let you take a piece of your writing and strip out *just* the punctuation ...
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