I re-read the article a few times and saw no mention of the product being counterfeit. They are all chintzy, poorly constructed, and come out of the same factory or two. Even if there was a brand name to counterfeit, the "counterfeit" would likely be almost exactly the same as the genuine article. Monoprice has a business model based on this premise.

What is the metric for "Molotov cocktail"? Anything that has batteries with a high energy density can be extremely dangerous. Cell phones, laptops, RC cars, power banks, and anything with a lithium ion battery can catastrophically and potentially fatally fail. Sure, you could mandate that Amazon run their own battery of safety tests on every product that is sold on their site; they sure as hell could afford it. The problem is that there's just about nobody else in the market that can.