It's interesting to see the changes relative to the current recommendations list. Having a snapshot frozen in time is actually quite nice in its own right, since it helps mitigate hindsight bias (or at least moves the bias back 8 years).
I will say, Katawa Shoujo is a surprising omission, considering how freely available it is, and putting Fate/stay Night in the beginner's category seems a bit funny now, but it's an interesting list overall. I haven't played a lot of these "classics" myself, so it might serve as a good reference if I'm ever looking to pick one.