I can't ever really tell what the goal is here - github star inflation, maybe? - but the odds of getting uptake or contributors on these is so slim. The user (or bot) DID try to send this to some "awesome C" curated list, which maybe establishes credibility. No idea. The new Reddit account also tends to spam the same intro post across a swath of subreddits. Often they get banned for it.

It's not free, is the thing, it costs some money to buy tokens to play the lottery with this kind of spam. So I just really wonder what the jackpot looks like.

I don't usually end up looking too hard at the code of these any more, because it's kind of a trap - commenters often ask "how do you know it's AI" but the answer isn't in the codebase.
* reviewing code now takes vastly more effort than producing it
* but checking the network of the author is much much simpler and more reliable

There's also common AI "tells" similar to those that give away generative prose (em-dash, not-this-but-that, etc) and for C projects it tends to be things like "lightweight" or *especially* "ZERO DEPENDENCIES". Maybe it's hard for agents to install C libraries or something but so many of these proudly say they've got zero dependencies and include some half-baked HTTP server or something.