i dont think that people actually dislike 'fluff' in writing its just that not many people know how to write characters well when nothing high stakes is happening and therefore the scenes feel bland or wasted (tucks and rolls offstage) because they can only imagine people to be interesting during high action scenes and not during the slower moments in between (slides on a tomato) likely because they consider their own life and the people around them uninteresting and cannot imagine characters they want to like to be anything less than larger than life when in reality the quiet humanity between action is the core of all good character writing (gets shot)
to be good at writing fiction you must first stop looking at it as an escape from reality but a mechanism through which to process it