If it is foolish to you, then so be it. To categorically ignore the power play implied by defining a section without any input from it (and ignore rest of the comment, I suppose, along with the book and its criticism) seems intelligent to you then so be it. I am deeply aware of my inability to explain what has already been explained by others, so I resign.
"Cause I doubt they would agree." That should tell the complexity of defining Hinduism and the amateurish level western 'Indologists' have achieved which they spread around, calling any criticism to their approach 'foolish'.