The em dashes didn't strike me as LLM because they had spaces on either side, something I don't typically see in LLM outputs as much. But the quote you highligh

The em dashes didn't strike me as LLM because they had spaces on either side, something I don't typically see in LLM outputs as much. But the quote you highlighted is pretty much dead-on for LLM "speak" I must admit. In the end though, I think this is human written.