I don't think this is positioned to replace Wordpress, Astro, Hugo, etc by any means.

It is just a barebones framework written as a love letter to the language of C.

If its a loveletter to a language than telling you the language is important because that's its sole reason for existing. Someone probably just took this on as a challenge for fun. It's not designed to be in the next YC cohort.

And for that reason, I enjoyed reading through the code and marveling at the simplicity and power of C. It made me warm and fuzzy. But I'm not going to use it. I might fork it and play with it for fun though.