Apologies if I've missed your point, but if what you're hinting at is that we should take his ideas about the social impact of AI less seriously because he's not deep into writing Rust code all day, that's just laughable.
Well yes, we don't really know what this thing is yet, and the only ones who kind of understand it are the researchers themselves.
no, my point is that before reading a book it is often helpful to know who the author is and what is their track record