It’s management 101
Not to mention that, in data driven orgs, the launch/no launch debates are focused on those metrics. So if you want to call the shots you kind of need an in-depth understanding.
Just the economic incentive to cut moderators loose and use algorithms would be enough to do so if it were possible. After all you can buy a decent amount of compute power for 30+k/yr, that will certainly deliver more than the 100 or so QPD[ay] form a content moderator.
PS. I'm sure that most of the work is being done by algorithms anyhow.
Don't know about the banning situation, that'd require insider Facebook knowledge. I'm sure they ban some people.