Would users actually have a problem with that though? People have the freedom to share whatever they want, but that freedom doesn't necessarily have to include sharing it on Facebook. Facebook could decide to tell their users "We're filtering out the bad stuff much more aggressively now and unfortunately that might block your content by mistake." I think a lot of users would be fine with that.

As long as this exists and actually leads to human review, I'd much rather wait a while for my videos to be posted if it means easing the burden on 15.000 people having to watch highly damaging content.