I saw it too and OP has likely picked up these idioms from the sheer amount of AI-assisted or generated writing out there.
I think that's a convenient post hoc justification. I could as easily say the LLM wrote it that way because that's how people actually write.
I even have a plug-in that converts some hyphens to em dashes on my blog.
Rendering judgment on someone who published something on their own site without knowing their stack reflects more on you than him.