Actually, if the book had "Baka no Itte", that would show that the author has a neat sense of humour, so I'd be even more interested.
The risk of someone believing that "Baka no Itte" is anything other then a joke, is rather small.
The risk that someone who writes a book about Go, would believe it, is very small indeed.

This is a big site. It has room for pages of pure, Go related, humour. Not only that, but I think it is appropriate and indeed good, that it has such pages exist here.
...and "otaku hikaru fans"? Well many people who like Go are Hikaru no Go fans. Those who aren't, can still appreciate the joke
...or they can go of to some other page