Going by the assumptions of people who are unrealistically optimistic, refuse to accept any news unless it paints China's engine program in the best possible light, and feel the need to engage in a moral crusade every time someone points out potential problems is even worse. You can have a million fanboys making up whatever information they want and make a million excuses for why bad news must be lies. If you can repeat a lie long enough, people will indeed believe it, especially if they predispose themselves to certain kinds of lies by the way of their emotions and attitudes. Look at how much irrational negative reaction (and the hurt feelings! Who knew you could hurt people with disagreements about fact!) we get when someone dares to suggest that not everything will be rosy and that not everything about China's engine program will be unending accelerating progress.
FYI, I don't judge the reliability of sources by who offers good news, but who's been largely right, and how consistent new information is with fact patterns. It's called being objective and not letting my biases affect my factual understanding. Facts take no sides but that of reality, and I prefer it over some kind of ill founded nationalistic ego, least of all because believing you're more than the truth can only make you look foolish.
If you think my judgment is faulty, fine, but unless you have actual factual arguments to refute whatever observations or point I may be making, kindly keep it to yourself. I like good arguments and debates, and trying to attack the credibility of a person without keeping to one's own standard of credibility is neither good argument nor good debate.