Lots of nitpickery about what exactly it means to be TeX here, that IMHO are sort of forest-for-the-trees argumentation. What's interesting here is that it's a

Lots of nitpickery about what exactly it means to be TeX here, that IMHO are sort of forest-for-the-trees argumentation. What's interesting here is that it's a blog post on how to do page-level typesetting, which was a subject of great interest and serious research in the 1970's but in the modern world has been mostly forgotten. And that's somewhat unique. Modern developers still occasionally worry about low level details like instruction architectures or I/O latency or packet dumps. The lessons of our ancestors about algorithm choice are still alive in our culture. But virtually no one gives any thought to how their text is laid out at a level of sophistication higher than the CSS box model. And that's kinda nice to see.