VNStat is a compliment to your VNDB profile, showing various stats and recommendations derived from your visual novel reading habits.
Yes! You can also search for any other VNDB user and view their profile stats too.
There are a few reasons this could be the case:
Recommendations are made in an automated and purely statistical manner; as such they should be treated more as suggestions for things you might enjoy based on the features and reasons described on your profile page. Occasionally you will notice recommendations for novels that appear confusing or just plain wrong, an explanation of why that novel was recommended can be found by selecting the adjacent question mark icon.
If you are looking for more "human" recommendations /r/vnsuggest is a good place to start!