Multiple Points of View (MPOV) is the idea that differing opinions can be represented on the same wiki page. It is not the same as the Wikipedia-standard NPOV, or Neutral Point of View. The wiki can take sides, as a whole, but counter-arguments should also be represented on the page, coexisting peacefully.
Multiple Points of View encouraged on the wiki, because people can experience the same work differently, depending on their life experiences. This is actually considered one of the marks of Great Literature, due to ideas about the Death of the Author and Watsonian Versus Doylist perspectives. Besides, we all have our own forms of Author Appeal, and this is completely okay.
Multiple points of view shouldn't cause debate on the main page (talk pages and YMMV are for that), but should simply present arguments about the trope. Even if there is debate on the trope, be sure to follow The Troper's Code and play nice.
MPOV is not an excuse for provably false information to be added to the wiki, like denying the existence of anthropogenic global warming. It's also not an excuse to drown out others with too much of your own opinion. It's a tool to enable academic debate on a topic.