[AsyncAwait]

> Materials and knowledge about the language leads to more people potentially discovering it. I can far more easily persuade someone to use Rust, if I share the website with them in their native language.

That works for more 'end-user' facing projects, (GIMP, Mastodon...), but for programming languages not that much. As someone who speaks 3 languages, (including English), let me assure you that (most) non-English programming materials use a very tortured vocabulary in the target language, which actually makes it considerably harder to learn.

Also, prior to me learning English, I've always found it extremely disappointing when the main website of a project was in my language, but then you click on any important link, (like a guide), and it's English only. It was a bigger let down that if a site was English only from the get go and I knew every link it's going to be English. I actually learned English because of this.

As for general info about a new language etc. there are usually dedicated "IT/programmer" community portals with news and some basic tutorials for the new hotness in the target language, which is usually how non-English speakers learn about new tech, not really from the project website, at least in my experience.