Are you making this claim specifically about this one particular post, or about everything on the blog, which dates back about a decade ?
Like "These Artemis 2 photos were generated by AI" is wrong but "The broadcast footage of the Apollo missions was generated by AI" is incredibly stupid and I want to understand if I'm about to engage with an incredibly stupid opinion.
There is a clear and sudden transition on this blog where prior to a certain date there are zero instances of the em-dash and then suddenly it appears like crazy. Like look at his archived posts from 2023, absolutely no em dashes... now look at every post from 2025 and almost every single one of them are literred with them.
I don't think it's a coincidence.