“Adjectives are frequently the greatest enemy of the substantive.” – Voltaire
“[I was taught] to distrust adjectives as I would later learn to distrust certain people in certain situations.” – Ernest Hemingway
“The adjective is the banana peel of the parts of speech.” – Clifton Paul Fadiman
“[The adjective] is the one part of speech first seized upon and worked to death by novices and inferior writers.” – J.I. Rodale
“Use no superfluous word, no adjective, which does not reveal something.” – Ezra Pound
“The adjective has not been built that can pull a weak or inaccurate noun out of a tight place.” – E.B. White
“[Whoever writes in English] is struggling against vagueness, against obscurity, against the lure of the decorative adjective.” – George Orwell
“Most adjectives are also unnecessary. Like adverbs, they are sprinkled into sentences by writers who don’t stop to think that the concept is already in the noun.” – William Zissner
But what would Rowling know about storytelling :)
I have never even read Rowling, nor have I read King. But such restrictions and imposing of so called “rules”, or what is good what is not, are absurd when comes art. I would urge anyone to not let such decrees by the famous to dictate their style, let alone a software.