Very few things can be proof of itself. The citation simply confirms there was a loophole. I believe the question was how the loophole was practiced. Ie, what was the thought process behind and what were the preconditions.
PS. Valid citations are ones from accepted texts. Media articles, even from high profile journals, are written by people from today. This is why most ACADEMIC journals require citations to back up statements. While this forum is not academic, most are here for meaningful discussion I believe. Therefore, it behooves us also to use valid citations.
This is not moral policing as I don't see any morality or immorality involved. This is about not wanting to come away with wrong info.