To some degree, that is the desired outcome. If a judge consistently gives outlier scores based upon their "true" opinion, then I'd hope that they would conform to the norm with some positive mentoring.
I don't get the sense that anyone believes there is a rampant problem of rogue judges. I do believe there are a small number of judges that consistently score entries using a different scale than their peers use. Left on their own, those judges might as well stay home since their scores are likely being thrown out anyway.
As cooks we get feedback at every contest about things that could use improvement. Don't we owe it to our judges to give them the same type of feedback about their craft? How cool would it be for our judges to get a score sheet after every contest they judge that showed them how their scores compared with others at their same table. I think judges would get as much benefit out of that that I do getting cook score sheets.
The judging at contests of 40 teams or less is consistent. While the judging may be flawed at times, it is still fair. We all have the same probability of hitting a "bad" table. And tossing the low score out goes a long way to overcoming an outlier judge. Just because the system is fair doesn't mean it can't be improved.