Sure, I'm not contending that the information is exposed in the blockchain, I'm saying that third parties that keep logs of their sends can collude at a later t

Sure, I'm not contending that the information is exposed in the blockchain, I'm saying that third parties that keep logs of their sends can collude at a later time to produce a more complete picture of the transactions sent to an individual. Right now avoiding that in monero is difficult. Subaddresses (as linked above) solve some of that, but as there is still a linear time scan increase, I wonder how prevalent their use will be. Will people create a new address for each receive they do? Maybe, maybe not.