I have no problem imagining it gone.
Once large online repositories of independent reviews became de rigeur this guide and many like it became terribly obsolete. With hundreds, and later thousands of people reviewing everything from books to movies it became possible to find people whose tastes mirror one’s own pretty closely.
On top of that, online reviews start becoming available as soon as someone reads an advance copy or sees a movie premier. Guide books take a while.
His guide (however detailed) simply can not match the vast competition it now faces.