Earlier quoted context omitted.
So, not exactly a problem for anyone who wants to use a raspi but also windows? If you need MHz of GPIO speed, you're basically in arduino land now, and raspi+win or a minipc+win doesn't make a whole lot of sense. But hey, you can you also just connect an arduino to the minipc and get the best of both worlds.
You can achieve MHz GPIO speed with RPi running Raspbian. There are FIFOs and DMA. The days of bitbanging are long since gone.
Of course you can, but this article is about folks who want to use Windows (for whatever reason). If you want to use "the raspi" as a controller, there is zero reason to look for a way to put Windows on a tiny board. A standard raspi already does what you need.