Our data is already public though? The ActivityPub standard specifies that the majority of data we publish on any given instance is public through that instance’s API, and a web scraper could be easily built that would comb through and gather all of it for advertising or machine learning purposes. The only real way to avoid that would be to take the sites themselves private, which would kind of defeat the point of social media, or to just not use social media.
Oh yeah, the app is a monster that will eat all of your data. I thought we were talking about federated data they would get from the other instances, which is more or less public. My data as shown in that image is not public and I have no plans to hand it over to Meta.