[Theory] Jiraiya learned as much as he did about Akatsuki because of Itachi

[Inert Brian]

akasuki interacts with several people that arent apart of any villages like the bounty collecting guy who knows kakuzu etc, etc

jiraiya got his info from these low level thugs not itachi

Kakuzu specifically deals with Akatsuki's money. Although this is possible as well, but would he have asked every single person town to ton?