Damn, people, what's the deal with the em dash? You only learned about this stuff now? Back in the 00s I had a design course as part of my main program, and guess what — yeah, we actually studied when to use which: dash, minus, em dash, whatever. That stuff was crucial back then; it was one of those tiny details that separated a “professional” from the average crowd.

So yeah, nothing magical here. AIs just picked up that old “academic-only” knowledge and now use it to… well, to look a bit less average. Lol.