Let's say that Acme is a low-down, dirty-rotten, rip-off con who has been usurping somebody else's trademark to make a quick buck with counterfeit merchandise.

Why would Amazon merge the reviews of that product with the reviews of the authentic, high-quality, reputable Chinese vendor's actual product?

Why does Amazon allow a "color" to point to a product from a completely different seller? Why does Amazon allow product aliases at all?