I'm not a fan of Jackson, but even the nytimes attacked this book. From their review:
"haphazard and unconvincing book"
"Mr. Sullivan fails to give us any new insight into Jackson’s enigmatic personality"
"Fans of Jackson’s talent (and even those readers only curious about the onstage phenomenon he once was) would be way better off viewing that documentary — or YouTube clips of the Motown show — than reading this bloated and thoroughly dispensable book."
This sounds like a bad cash grab that got its just deserts as opposed to a victim of malice.