I have zero ability to base my opinion on anything but truth, one article is not going to change that!
It's not the only article, Noyes talked about it as have others.
The quotes are pretty specific.
Generally the problem you and others have, is that you can't really believe that something like this was going on. It seems outrageous because you would never do something like that, so you project onto others your own inability to engage in unethical behavior, and assume that it requires an untold amount of effort to pull this off. It really doesn't. Sometimes the best way to engage in fraudulent behavior is to do it in plain sight, or to prey on people's trusting nature. Sure you might read about this stuff in the news, but it tends to become a more abstract idea that seems disconnected from whatever way you tend to view the world. You also believe it is a completely isolated incident that is a complete aberration to human nature when many times it is not.
It's sort of like how when people hear about awful news, the reactions are many of the same tired cliches like, "I can't believe he did that" or "I never would have guessed" or "He seemed so normal and nice". Reconciling reality with one's own personal worldview is more difficult than it might appear on face value. That's why witness identifications can be spotty because an event can unfold in front of 4 people, and you will get 4 different --sometimes vastly-- accounts of what has happened. I once watched a woman engaging in a series of thefts, and when I reviewed security footage, you know what was the most amazing aspect of it? She did it in plain sight. There were people literally next to her, or they had her in their line of sight from 5 feet away, yet they never processed what she was doing. Of a number of victims, only one ever noticed they were robbed, and that was after the fact.
Bernie Madoff is a great example of the ability to pull of a con and fool many people who you'd assume would know otherwise, but never even noticed he was running a Ponzi Scheme. The confidence trick is how much of this stuff is done, and it works because it preys upon basic human nature...and human nature being human nature, it doesn't change, hence why it happens all the time.
You and the rest of the doubters seem to think GP is somehow immune to human nature, but the entire success of GP is based solely upon the consistency of human nature. People believe...no, they have to believe the competition is conducted legitimately. That is the base for all professional sports - the belief that the competition is conducted legitimately, and fairly. Sure there may be some instances where such things come to light, but in order to reconcile that with the belief held in the sport, fans often opt to view it as an isolated incident. Even when more incidents occur, the fans will reach for the easiest explanations so as not to undermine their long-held beliefs. Take the Steroid Era of baseball, most people today believe steroids/PED use was limited to a small period of time in the game. The record reflects this to be a total fabrication. For as long as the game has been played, cheating has existed. The media, fans, and even at times the administrators of the sport rationalize it all away through various explanations. Commissioner Allan "Bud" Selig looked the other way on the steroids issue in spite of being made aware of it long before it became a news story. Owners looked the other way. In fact most everyone looked away because it was easier to do than to admit there was tacit approval given to let this go on. Even worse were the reactions after the fact where those who knew, suddenly pretended they didn't, and were screaming about how awful it all was. Yet, none of them gave back their untold millions of dollars earned. Ownership who benefited from it all, then colluded after the 2007 season to run Barry Bonds out of the game in the offseason because they didn't want anymore press on steroids. Everyone believes the game is clean today and that when a guy gets suspended for PED use, it's once again an isolated incident. It's not, but people tell themselves what feels comfortable to themselves.
That's why the case of Valentino Rossi and the Saturday Night Specials is one of the most successful cons. Few fans can reconcile it with their worldviews, and cannot believe such blatant cheating would be happening...all in spite of evidence showing that this stuff goes on all the time in sports and fans engage in the usual ignorance to it.
Just remember, Estoril 2006 has been portrayed by many fans as a what?
"Isolated incident."