Not that person, but I objected to:
0 -- The outrage caused by misidentified profiles is larger than the outrage or societal damage caused by the existence of fake profiles.
...which was an unstated assumption underpinning why that entire argument would be an objection to implementing account review, and in my estimation is incredibly incorrect. They're being forced into Senate hearings over the false profiles, constantly being harassed by merchants about possible ad fraud over them, and are losing the trust of their communities. By contrast, the storm in a teacup over a few misidentifications is nothing to Facebook. (There's numerous other unstated, highly subjective assumptions as well.)
I also object to:
1 -- This is true, but irrelevant. Facebook cares about the rates of outrage in communities, not the mere existence. Ironically, this person seems to have fallen into the trap they called out, by thinking Facebook cared about instances of outrage (as the poster would). They also care about the relative outrage -- how mad are people compared to another option we can try. This point very poorly frames the problem as being about trying to stop any outrage instead of trying to minimize outrage.
4 -- This is community specific and untrue of the bulk of people. Decreasing error increases the vitriol involved, but it seems to come from a decreasing number of people as the outrage evaporates in the face of better error rates. So I think they're outright wrong here: it's like water cooling as it evaporates. The water is going away, even though it's cooler in the area.
5 -- This one becomes irrelevant (and/or wrong) if you correct the mistakes in 1 and 4.
Overall, this argument is --
a) irrelevant because even if it was correct, it wouldn't matter as it fails to contextualize its point by comparing levels of outrage between sources
b) wrong internally, in that it's largely irrelevant to the problem at hand or just outright wrong.