I realized this back during COVID. I had always known FB and their parent Meta were shit companies, but they were pushing engagement algorithms that lead to death threats because I would say innocuous things like stay safe and use a mask if you need to.

After my third interaction with someone in my past who had been radicalized by their garbage propaganda I said enough was enough and deleted my account.

My family still uses it and I still warn them not to, but I will never use their service for anything personal again.