What is one argument made by Spike about the book 'As Filthy As Their Heart Desires'?

The argument made by Spike regarding the book 'As Filthy As Their Heart Desires' focuses on its commercial success, specifically that it sold over two million copies. This detail highlights the widespread popularity of the book, which may imply that despite any subjective criticisms of its content or themes, a large readership was engaged enough to purchase and presumably read it. This sales figure can serve as a counterpoint to claims that the book lacks value or merit, illustrating that public interest often transcends critical opinions. Additionally, the argument suggests that the number of copies sold is a testament to its appeal and impact on popular culture, indicating that it resonated with a significant audience.