Do you not remember ten years ago when this was a thing with Python? It's an effective evangelism tactic. Super annoying, but it "works" in some sense. I consider it like "YouTube face", I tolerate it because even good projects or creators have to play the game to some extent or get washed away in the crapflood.
> Also, I don't find it annoying, but helpful, because I care - amongst other things - about the language of open source software projects.
Come on, this is not even a good strawman. It's very easy to find out the language of you want to know, and it's possible to inform without evangelism.