Earlier quoted context omitted.
Nobody can know for sure. Whether or not they were secretly mining data from AWS servers, they would say they don't and nobody on the outside would be able to tell. Even if it's unlikely, many people are simply choosing not to risk it.
This is at the level of a conspiracy theory right now, and one that doesn't even make any sense. If it were true that Amazon were taking sneaky peeks at data inside AWS related to retailers, and this became public, AWS as a business would be done. The loud banging you'd be hearing would be the door closing as the last customer exited, followed by all the engineering staff who work on AWS as they see the writing on th…
It's a conspiracy theory to believe that a company whose policy it is to not access data that is on their own platform, who was caught accessing said data, would violate such a policy?