I don't really understand what the big deal is here. All this data was given to facebook. Ads are inherently propaganda, how is the use of this data any differe

I don't really understand what the big deal is here. All this data was given to facebook. Ads are inherently propaganda, how is the use of this data any different? If I decide in my terms of service that i can use your data however i want, including mining your messages and selling it to an evil dictator, i should be able to do that. If you agree, you are free to use my plateform, if not, thats fine too, you can't. me, and a group of people whom i've paid have developed this app, how can you restrict my right to do as i please with everything that comes out of it? If i want to shut down facebook tomorrow, i can. If it's against what is in my terms of service, sue the living shit out of me, and force me to update my terms to reflect reality or delete the app.