Opened the blog... then the main page and I'm still not 100% what it is... looks like collab-editor? but has own format (not markdow or latex)?

Typst is an open-source alternative to latex and typst.app is their closed-source collaborative web editor.

It's more of a LaTeX alternative, which also happens to have an official web app.

The engine itself is open source, so you can always just install it and compile your documents on the command line.

Very in-house definition of “better”. Better on paper and at producing paper but who cares?

Typst is technically interesting but it doesn’t appear to have a driver (a person, a Zuck, a Bezos, a …) with a business/power-hungry brain at the top table. Forget paper/PDF, and for the love of God forget TeX/LaTeX. All — absolutely all, resources should be focused on web/HTML. Rank-order your priorities. Using all cores in a CPU to produce something for a printer is not even on page 33.

Focus please and make the web a friendlier place for exploring/expositing science/knowledge. It’s annoying because you tapped into something but seem to not understand the little ledge you have carved out. Wishing you a explosive success!