"If a business is built on misleading users, on data exploitation, on choices that are no choices at all, then it does not deserve our praise. It deserves reform," Cook said in one. "A social dilemma cannot be allowed to become a social catastrophe."
During the panel, Cook issued a series of calls for greater consumer privacy protections and wider industry reforms. He touted the Apple policy, known as App Tracking Transparency, and other new transparency measures from the company.
"The first is a simple but revolutionary idea that we call the privacy nutrition label. Every app — including our own — must share their data collection and privacy practices, information that the App Store presents in a way every user can understand and act on," Cook said, in a nod toward accusations from Facebook that Apple's own apps are not required to play by its privacy rules.
Cook said Apple users have long asked for features like App Tracking Transparency, and Apple has worked closely with developers to give them time to implement the transparency feature as the company continues to shift toward reduced data collection overall, a move Cook says requires global and industrywide reform.
"Right now, users may not know whether the apps they use to pass the time, to check in with their friends, or to find a place to eat may in fact be passing on information about the photos they've taken, the people in their contact list or location data that reflects where they eat, sleep or pray," he said. "When ATT is in full effect, users will have a say over this kind of tracking."
Cook laid into Facebook in all but name, accusing it of manipulating public news consumption and exploiting user data collection in order to serve hyper-targeted ads while simultaneously fueling political polarization and the spread of misinformation.
"What are the consequences," he asked, "of prioritizing conspiracy theories and violent incitement simply because of their high rates of engagement? What are the consequences of not just tolerating, but rewarding content that undermines public trust in life-saving vaccinations? What are the consequences of seeing thousands of users join extremist groups?"
Although it didn't confirm whether the company was preparing an antitrust lawsuit against Apple, Facebook pushed back against Cook's remarks in an email to CNET.
"As we have said repeatedly, we believe Apple is behaving anti-competitively by using their control of the App Store to benefit their bottom line at the expense of app developers and small businesses," said a Facebook spokesperson.
The response echoed comments made by Facebook CEO Mark Zuckerberg on the company's Wednesday earnings call.
"Apple has every incentive to use their dominant platform position to interfere with how our apps and other apps work, which they regularly do to preference their own."