That's with regard to information meant to be secret, whether it's boardroom intrigue or plans that marketing wants to control.
There's other information that is "ordinarily secret" but "no big thing if revealed." This is stuff that a lot of people have access to up and down the corporate chain, all the business partners and vendors are in on, and all their family members and best friends. E.g., I posted about my one and only personal insider contact I have that there will be a Coke stand eventually installed in SWL. That's because I know a person involved in making that happen. Many of our insiders here are business associates of Disney and thus the source of their insider knowledge.
A real insider has said that Disney normally doesn't care about such types of leaks. Apparently, some imagineers can't stop blabbing about stuff they're working on (and if it's in the Blue Sky phase of development, often doesn't come to pass, and thus all those rumors that never go anywhere). It's the palace intrigue and the really big stuff that marketing wants to reveal that are truly secret and are true "leaks."
All of the 20CF films were not dumped.
en.wikipedia.org
en.wikipedia.org
Additionally, resources at Fox TV and Studios are being diverted for Disney+.