One piece of writing advice that has stuck with me through out the years is that a story (for example) should never say more about the author personally than it does about the story. And for me, that fits into the complaint of manipulation. Sure, all fiction is inherently manipulative, as the author is trying to get you to imagine (or re-imagine) something in the way they want you to - but if your writing is good, the reader either shouldn't notice that they are being manipulated or the reader should be so engrossed that they don't care.

If, on the other hand, as a reader you can see the metaphorical puppet strings jerking behind the scenes, it usually makes you stand back and go 'Gee, that was predictable' - or cliched, or lazy writing, or out of character, or possibly even 'I think this writer needs to sort out some of their issues.' And anything that takes you out of a story then takes away from your enjoyment of the narrative.