alt Hacker NewsYou make it sound like you're confusing popularity with notability.
Unlike Jai and V, Odin has been in commercial use(JangaFX) for years now with several high performance computing products written entirely in Odin and the customers of JangaFX includes several AAA video game and VFX corporations. A lot of programmers not knowing or the language not being mainstream does not mean that its non-existent.
The Notability of Wikipedia is just the involved admin's opinionated bias. As simple as that. Its always been like that and it'll probably always be like that as Wikipedia seems like it isn't are capable of operating while changing that.
Notability is a qualified state on Wikipedia, as both TFA and Wikipedia itself document.
One of the qualifications is having third-party sources document the subject, where those third-party sources are themselves notable and reputable (in the subject area). A company’s statement that it uses a programming language might be factual, but that doesn’t necessarily make it notable.
(To be clear: I was only vaguely aware of Odin, and I have no idea who/what JangaFX. But that isn’t dispositive.)