As a similar anecdote, two days ago my Xorg server crashed. Not WM (E17) mind you, but X server. It was running continuously for about two months, was eating more and more RAM and finally, when Chromium froze and went on a RAM eating frenzy, the server crashed. It was the first time I saw X server crashing since I fought with enabling compositing in XFree on PIII 1Ghz, but still, it happened.
So, what I want to say is that no software can run flawlessly forever; it's just a question about how often (or how rarely) the crash (or other malfunction) is going to happen. 0.28 bluescreens per month per user is a pretty impressive feat and it's says more about how good than how bad W8 is.
Selection bias works both ways, people who install such "utility" software may be taking worse care of their systems and installing more bloatware.