I agree, but as I tried to state, there is simply more to it. Giving bad interviews doesn't mean anything. Accidentally beating the world champion doesn't mean anything. Spending all night studying a rarely played chess line that just happens to be the exact line played the next day doesn't really mean anything either. Not really being able to analyze like a GM doesn't mean anything too.
But when you have all these factors happening during one game, statistically it is not probable.
And that one just happens to be a kid who was caught cheating online twice (unlike any of his other opponents) and was an unremarkable player until the age of 17 but has since attained 2700+ level (unlike any of the current young 2700+ players who all reached GM level before the age of 15).
But when you have all these factors happening during one game, statistically it is not probable.