First of all, there are differences between AZ and Creighton. We know the FBI has tape of Miller at AZ discussing payments to Ayton. There is no suggestion about Creighton other than Bowen Sr. asserting that and he has problems of credibility. So using Creighton as an excuse for Archie is not reasonable. Also, we might reasonably expect brothers to know more about what is going on in a program than would a non-family member. That is not always always true but it is likely true given family relationships
You may well have a degree in Informatics, but it seems fairly obvious that you missed a semester or two of Philosophy as part of your studies. You seem to intentionally ignore/refuse to recognize that there is a difference between legal behavior and ethical behavior.
So far, l'affaire Langford suggests unethical behavior at the minimum. Again, national press has written about this because it looks really bad. Otherwise, why would they do it? Again, you ignore the point that if it was common, it would not be news. As I wrote, exploiting a loophole may make it legal, but it does not make it ethical. As the fan of a program that has made a point of ethics, you should be sensitive to the differences. If you are going to rely upon the letter but not spirit of the law, so be it; but just recognize that you give something up in the process.