Daniel Mayer wrote:
Let’s not forget that language is not only a means by which information is presented, it is also part of the human experience we are documenting. One of the main reasons why many schools require students to learn a second language is to expose students to a different culture and way of codifying thought (this contrast is often very instructive in showing the student how their own language works).
Thus helping to preserve an endangered language by hosting an encyclopedia in it also directly furthers our goal. This would not include non-famous conlangs since those are largely original research.
This would be an argument for having good articles like [[en:Hopi language]] (and the equivalents in de:, ja:, zh:, fr:, etc.) -- information about languages written in a language that people can read. Merely preserving a language that nobody reads by writing an encyclopedia that nobody reads in it isn't really furthing the goal of disseminating information to people.
-Mark