Hi, rdd007
Although answers to your original question may still be debated, I have a question for you:
Why not try to quantify the costs involved in treating internal "bad parts" (or, nonconforming parts, more correctly) in the manner being used, compared to identifying and solving the underlying issues? Repeating the same mistakes over and over again COSTS MONEY!!!!
If you can quantify how much, that cost becomes a virtual 2x4, with which you can knock some sense into certain management types. If you don't, rest assured, your competitors will.
Just my opinion, of course.