Agreed to some of extent, but how about include them also?
My guess is, more stats will show up when you report enough.
For example, I want to improve my reporting to have a 100% and my reports are 50% bad. How could I improve it without seeing it?(Just an idea because I would like to report regularly once I bump into one of them)
As the report page says: "Do not worry about your accuracy too much; one accurate report is worth many inaccurate reports."
In other words, it's better to report 10 posts without being 100% sure they're bad, and get 8 of them deleted, than just reporting the one you're absolutely sure about (which means the remaining 7 bad posts aren't deleted).