It isn't, by itself, conclusive at all, but the amount of smoke China generates around this whole thing, vs transparency, screams that there is fire in the middle of the smoke.
True, but saying that doesn't actually give it weight. And they aren't making a claim here, they are denying an accusation. My saying "Hey, pathological liar, I think you're Santa" and them denying doesn't make it more likely they are Santa.
