I really want to disagree with this, and have more faith in humanity, but I suspect you are more or less right. Even if it's 1,000 or even 10,000 or 100,000 cameras returned, it'll likely amount to a nothingburger for Amazon.

To make a real statement here, we'd probably need several million returns in the US alone. (A quick search suggests more than 20M installs in the US.)