In the first place, this argument rests on a gratuitous assumption that .The author unfairly assumes that. However, the assumption is questionable because the author provides no evidence to support this argument. The arguer fails to take into account other facts that might contribute to the result that It is likely that , it is also likely that Any of these scenarios, if true, would show that Therefore, this argument is unwarranted without ruling out such possibility.
In the second place, the argument commits a logic fallacy of after this and therefore because of this. In no case can the mere fact that be cited as evidence to support the assumption that there is a causal-effect relationship between A and B. Moreover, that just because B can be statistically correlated with A does not necessarily mean that A is the cause of B. In fact, the author has obviously neglected the possibility of other alternative facts such as, or may contribute to a certain extent to B. It may be only a coincidence that . Unless the author can rule out other factors relevant to , this assumption in question can not be accepted.