For reference, this blog post appears to be by the same person who is the overwhelmingly primary contributor to Typst: See https://github.com/typst/typst/graphs/contributors
That used to be the way blogs work, just written for a broad, unknown audience, but these days most blogs are written with a specific audience in mind, often one that knows the author reasonably well. Sometimes the blog is even just a secondary place to have an archive of the post, the main intended place being a post on a close-knit forum.
Once you take away the assumption that you're the intended audience, it's much easier to see the article - and the things it says and doesn't explicitly say - in a clearer light.
> I want to use this post to explore these differences, to identify the benefits and limitations of both models, and to present my thinking on the future of Typst’s layout engine.
Which immediately made me think the author of the post was involved in Typst development.