What am I missing...?
It's not huge, it's not even slightly significant. This service isn't approved by amazon.
Basically I pay bitcoin to Bitpay. Then Bitpay place the order on Amazon on my behalf, most likely making their money off amazon referral fee.
Bitpay is still using credit cards/amazon vouchers to complete their purchase, amazon still skimming their 12%, credit card companies still get their few % cut, now it's just another man in the middle, taking a cut of the cost.
This isn't new, someone was already doing it with both ebay and amazon and it won't be that popular i assure you.
The services BitPay offers have not been directly approved by Amazon.com and customers should not confuse these services offered by the Bitpay WooCommerce plugin as being endorsed, sponsored or approved by Amazon.com. Amazon.com, Fulfillment by Amazon, and the Amazon logo are registered trademarks of Amazon.com, Inc.