I doubt that is true, and I haven't seen any proof of it either.
What I can tell you though, is that Amazon is incredibly lenient on enforcing EANs. So even though there is that identifier that should be able to uniquely identify a product, often times third-party replacements for the product, or even completely unrelated items are listed under the EAN, and Amazon doesn't give a shit.
What I can tell you though, is that Amazon is incredibly lenient on enforcing EANs. So even though there is that identifier that should be able to uniquely identify a product, often times third-party replacements for the product, or even completely unrelated items are listed under the EAN, and Amazon doesn't give a shit.