Earlier quoted context omitted.
Yes, the tl;dr of this article seems to be: > I do not expect ANYTHING to come from this project. I do not expect to finish this project. So... good luck with that. :)
Goes without saying, its a browser, browsers are never finished. unless you discarded html/js and started from scratch... but then you'd have no data for the browser and what would be the point of that.
But they can be working enough, to be useful. Meaning they can display correctly the pages you want to see.
So the best independent effort of a working browser I know of, is ladybird. And Kling knows how to build browsers, so toying around with a browser from scratch on your own will be a learning experience. But I guess you might learn more, by contributing to a project that stands a real chance to become a working browser.