maybe a crazy take idk but i dont actually think many scenes in stories are 'unneccesary' i think they just make people uncomfortable and rather than try to understand the significance of that discomfort and why the author mightve deliberately inflicted it, decide that discomfort = bad, therefore that scene + the author are both bad
i cant really tell you how many times (as a csa victim, as someone with an ED, and someone whos struggled with suicidality) how many times one of my real life experiences is called 'unneccessary' despite making complete sense with the path a story is taking. despite being very honest and unglamorized in their depiction.
i think that there is absolutely instances of the abuse people face being made a spectacle of that is 'in poor taste', but this has somehow evolved past 'please handle these subjects with care' to 'its bad to even discuss them at all'.