The sample was a set of legal briefs, but the conclusions were about judges. Small samples may work, but you can't sample population A to make an inference about unrelated population B.
By analogy, the fact that my ice cream truck only sells half as much ice cream as I expect doesn't tell me that there aren't many kids in the neighborhood. Maybe my prices are crazy. Maybe my only flavor is chocolate-chutney ripple. Maybe the scary clown on the top of my truck frightens children away. From looking at my inventory, there's probably not enough information to tell.
The fact that judges didn't read pages and 3 and 4 of the briefs could be because the documents were late, incorrectly presented, or manifestly incorrect on the first page.
No need to read the rest.