A great article that taught me a lot of history. As a long time Linux user and advocate for that history, I learned there is actually a lot to appreciate from the work that went into NT.
I worked on kernel drivers starting in with NT 3.5. However, over the years, the kernel has become bloated. The bloat is both in code and in architecture.
I guess this is inevitable as the original team has long gone, and it is now too large for anyone to understand the whole thing.