The article did provide reasonable support for claim 1. Thousands or tens of thousands of people would have to buy the combination for it to be recommended, and

The article did provide reasonable support for claim 1. Thousands or tens of thousands of people would have to buy the combination for it to be recommended, and aspiring terrorists don't usually purchase their terrorism supplies in a manner that makes it trivially easy to identify them (since Amazon knows who its customers are). The article also provided a far more plausible explanation for the recommendation than people building bombs.