
Google: Fluff Content Hard For Search Engines To Understand & Maybe Rank
Google's John Mueller the other day said on Twitter the example given to him was

My take: this is easier said than done.
Any attempt by Google to cut down on 'fluff' needs to take into account NICHE
Recipe content, for example, is notorious for fluff.
Plus, it appears this can easily be worked around using Q+A type headings that attack related sub-topics