Especially because it doesn't even have feature parity.

Rewriting Jekyll in the original language with this feature set and compatibility would be faster as well.

Rust port in 3...2...

Have had a good experience with Zola, written in Rust:

https://www.getzola.org/

My problem with zola is you can only use markdown. So you can't right content in asciidoc or even plain html.

Seconding Zola. Fantastic project. I built a site with > 200 pages (including media) in 90ms on an M1 MacBook Pro.

There is no plug-in ecosystem unfortunately.

Shortcodes are nice and a modest replacement. Missing any headless CMS integration naturally because it's statically typed and compiled.