It's a common piece of writing advice that when you are attempting to write a story, you should be writing for yourself and not for an audience. Filmmakers are encouraged to create films that they can enjoy. Actors are encouraged to accept roles that allows them to express something they find interesting. But when it comes to a collaborative nonfiction wiki, it is important to remember that our articles are for an audience. Less than 1% of the traffic on this website is from people with a tv tropes account. A fraction of that are regular editors.
Regardless of the article's namespace, be it an article about a work, a creator, a rarely-used trope, or a Useful Note, the article will be read mostly by people who do not edit the wiki. It will be used by our audience to talk about the things we are talking about. It will be used by people as a citation in their attempts to analyze pop culture. It will be used by people who are not editors of TV Tropes. That is our audience and the goal we have when writing.
The exceptions to this rule can be found in commented-out notes at the top of articles and in the body of examples. The Administrivia/ namespace is for articles aimed at other editors, or people interested in becoming editors. The Ambiguity Index is written with editors in mind, but also make it easier for non-editors to find the works and tropes they want to read about.
