"But thousands of other developers, including the makers of games such as FarmVille and the dating app Tinder, as well as political consultants from President Barack Obama’s 2012 presidential campaign, also siphoned huge amounts of data about users and their friends, developing deep understandings of people’s relationships and preferences."
Last I checked, Farmville was not associated with OFA. So you need to back up your assertion "All the rest of them were subject to relatively strict controls, requiring months or years to collect even a small fraction of the data that the Obama app was allowed to collect. " and explain why this also renders the entire dataset collected by CA to be completely harmless, in contrast to the current narrative. Because it's not that interesting if a relatively benign political organization got a little more data than another which used it to impose the will of a foreign enemy upon the US electorate.