https://www.cnet.com/news/cnet-asks-will-you-still-use-facebook/

Cambridge Analytica, a third-party data-mining company, uses personal data and strategic communications to target electoral campaign info at voters. The company reportedly acquired up to 87 million Facebook users' information in a way that violated Facebook's policies, and then misused it for political ads related to the 2016 US election.

If it targeted all potential 87 million users, well, that's larger than most countries' populations. The size of Facebook's database is so large it could potentially take a long time to fix. And with several unanswered questions, do you have that kind of patience to wait for a trusted fix from Facebook?