Wikis for many games and stories are anti-fun.

They provide convenient arranged spoilers that tempt players/readers into ruining their experience to instantly sate their curiosity.

A story or single-player game should be esoteric and difficult to source information on, this helps to preserve its magic.

There are few reasons why fictional details would need to be catalogued in an encyclopedia.

Competitive or multiplayer games can be an exception in cases where the game concedes to and is designed around the kind of anti-fun community optimisation that a wiki represents.

Video essays about fictional subjects tend to be even worse, since they repackage the kind of content you would find on a wiki into a video that is even more convenient, to the point where it can be considered a form of entertainment.

The conceit of these videos is that their titles suggest they will answer some interesting question or argue a controversial view, but this promise is usually unfulfilled.

The actual purpose of these videos is to churn up pictures and plot events and interesting details, all the cool parts you would encounter if you actually went through the experience yourself, into a paste that is regurgitated into the eager mind of the viewer.

There is another link between video essays and "recap videos", which you may be unfamiliar with.

They are just synopses of movies in a video form, so that viewers can tell their friends they watched the full movie without actually having to do so.

Wikis also provide synopses of movies.

The commonality is that these forms of media deconstruct experiences and repackage them into simplified entertainment.

But many parts of the experience can't survive this process, so what's left is a soulless mutilated carcass of tropes that bears little resemblence to what was originally intended by the artist.