The 80s edition of Berendt's jazz book would mention people like Kenny G... But, if you only have half a page for Ben Webster and a sentence or two for Johnny Griffin or Roland Kirk, someone like Kenny G cannot expect more than to be part of a list "further saxophone players in 1980s fusion jazz, some crossing over into what has become known as smooth jazz include Kenny G, Dave Koz,..." Acker Bilk might get a similar name check in the clarinet section...
The sentence doesn't really hurt anyone and I always appreciated that Berendt tried to keep that type of open mind... If the record store stocks it, then the book should explain it... Then again, I also wouldn't mind if the sentence was missing.