While I suspect you are correct, I also suspect that the audience for this book would probably be significantly more aware of it as a problem. This isn't a mainstream book, it's just a more accessible version of the sequences, so the target audience is going to be less "random Joe" and more "aspiring rationalist / potential LessWrong reader".

Speaking to my social circle alone, any of my friends who weren't curious about a book like that would probably also struggle with the material.

For some reason, it also strikes me as signalling "I am not a peppy self-help 'you can do anything!' book", which seems like a very useful property in a title. I have no clue if that's just me though :)