I do feel they've got a good point about notable sources in 2026. Wikipedia seems to have reliable source rules straight out of the 80s or 90s. In the internet era, the most reliable sources aren't usually old school journalists or media outlets, they're enthusiasts and specialists publications dedicated to the topic.
For example, they still seem reluctant to allow Serebii.net as a source for Pokemon info, despite the site being A: credited by all the news outlets Wikipedia does consider reliable and B: being reliable and long-term enough that the Pokemon Company themselves uses it as a source, and has the founder do AMAs/interviews at official events.
And it's a big problem with any topic (games and media, programming languages and frameworks, internet happenings in general) where internet blogs and YouTube channels are the main authority.
The most reliable source about a topic nowadays might not use their real name when writing. They might not have a journalism degree, or work for a mainstream media outlet. They might not have an academic background.
But Wikipedia struggles to deal with that. Their rules are too outdated to deal with the changing information landscape.
Do I feel like Odin in particular is being hit hard by this? Maybe, maybe not. I've not personally come across Odin when looking for programming languages or frameworks to learn. I haven't seen it discussed much on social media, on YouTube, or on Hacker News.
However, the issue still stands. If the 'wrong' sources are the ones covering it, then their notability and popularity is treated as irrelevant, and the language as not worth covering.
Wikipedia needs to figure out a new system for this. Maybe some sort of trust system where a source that's treated as reliable by enough existing 'reliable' sources is taken seriously in its own right. If a blog is treated as a reliable source by the New York Times on multiple occasions, then it doesn't seem like a stretch to say it's basically equivalent to the author writing for the newspaper.