As someone who memorised the key combo for em dashes, curly quotes and guillemot's back in IRC days this notion depresses me.

The first time someone accused me of being a bot because I use em dashes for inserting parentheticals, I was flabbergasted and then pissed off. I have plenty of concerns about GenAI, but I honestly didn't expect one of the problems to be "using a wide variety of punctuation is frowned upon". What's next? "Only bots use the Oxford comma", maybe?

That said, this blog post does seem to use em dashes "incorrectly", at least according to what I've been taught. The way I've been taught to use them, they're not exactly the same thing as a comma and you cannot use them interchangeably. But perhaps I'm nitpicking.

(PS: If it's not clear, I'm not the author of the blog. I'm just someone who hates how the GenAI is contributing to the enshittification of communication.)