The risk is not that the results will be impossible to gather and publish, but that they will be unprofitable.
CamelCamelCamel makes money off users clicking Amazon affiliate URLs to go to Amazon from their site. It's easy for Amazon (or anyone else, really) to determine from these URLs the Amazon account which is tied to these links and 'enforce' the C&D by canceling/refusing to pay that account's affilate link revenue.
CamelCamelCamel makes money off users clicking Amazon affiliate URLs to go to Amazon from their site. It's easy for Amazon (or anyone else, really) to determine from these URLs the Amazon account which is tied to these links and 'enforce' the C&D by canceling/refusing to pay that account's affilate link revenue.