Makes sense. The Brainfuck article has a bunch of citations to published journals and books, so it's notable -- people are talking about it in ways that Wikipedia recognizes. That's what "notability" means -- "are unrelated trustworthy people talking about it?"

This is the Odin article as it existed when it was deleted by that AfD: https://en.wikipedia.org/w/index.php?title=Draft:Odin_(progr...

The references aren't good. I don't have any pre-existing opinion of Odin, since I had never heard of it before I saw this HN post, and those references don't convince me that it matters to anyone.

I'm fairly inclusionist, so I'd personally think it's worth keeping the article if they could point to Odin being used by any notable project, or by a bunch of small projects. But the only user it claims for the language is a company I'd never heard of that doesn't have a wikipedia article.