My comment was trying to point on the inanity of calling out "so many em-dashes" on a post where it doesn't seem that obvious it was LLM generated. I added some of my own inanity with my remark about them being double-dashes, even though some people undoubtedly find-and-replace the em-dashes in their LLM-generated content something else to try and make it appear more authentic.

But perhaps the best approach would have been to down-vote and move on.