They are the LLM whisperers.
In the same way Nagel knew what it was like to be a bat, Anthropic has the highest fraction of people who approximately know what it's like to be a frontier ai model.
It's surprising to me that Anthropic's CEO is the only one getting real recognition for their advances. The people around him seem to be as or more crucial for their mission.
Nagel's point is that he could not know what it was like to be a bat.