It's likely because there's a citation in a paper. That's apparently the bar you need to reach to get Wikipedia to see something as significant enough. I tried to get a draft article about SourceHut ( https://sourcehut.org/ ) to be published after extensive improvements and they refused because there weren't enough third party links. This is despite the fact there's like a dozen pages in Wikipedia about software that is hosted on SourceHut, so it seems notable enough?