Conspicuously missing a comparison to Overleaf, arguably the most similar in nature to what this is trying to achieve. Cool project, nevertheless.
Typst looks cool, and I'm probably going to check it out at some point, but a comparison to similar web-based LateX solutions would be more useful than what they have at the moment is all I'm saying.
The compilation speed of LateX doesn't really compare to Typst. With Typst I can work with 3 other students on the same paper, and all of our keystrokes are immediately rendered.