Comment by Jallal

When you've read and understood some piece of code, you're more prone to replicate it, even without realizing it. And ReactOS developers have obviously some extensive experience with Windows API, and it should be not suprise that any attempt to rewrite Windows will fall into the same trap.

I'm not saying that their code is "clean" or is a "rip-off". Obviously, I don't have a clue about it. Maybe they were just lazy and they did not care.