Battery Draining and Unstoppable
I had to uninstall all Facebook apps from my phone last year - for the second time. Fortunately they where not part of the OEM installation, so I could do this.
The reason was that, even if I didn't use these apps, they drained my battery by midday. Without them I get a clear day off a full charge.
What was particularly unacceptable was that even if I force stopped these apps - when trying to keep some battery life for emergencies - they kept restarting. At this point it became a liability, risk, and safety issue to have them installed - regardless of their covert data slurping shenannigans.