I think the main point of this strip is that the PHB only makes things worse and is such a bone-head that even his attempts to help make things worse (as has been pointed out in numerous other strips). Setting up the taskforce will not uncover the problem as I'm sure they won't point to PHB as the source.
Ventifact, I think you're mis-perceiving Dilbert's point.
No one has bothered to point it out yet, but sordatos is wrong. You can argue that the use of black slaves gave Europeans an economic advantage in the 1500 and 1600's and that allowed them to advance militarily and technologically and dominate most of the world. That doesn't mean it wasn't a bad decision. Rome could also not have ruled Europe and the Near east without slavery. We could argue whether the scientific, political and cultural advances that were already underway, would have happened without either military domination, but it is clear that by the time of the U.S. Constitution, the only â€œbenefitâ€ from keeping slavery was maintaining the status quo so a lot of rich white guys did not lose their power and wealth. OK without this fault the Constitution could not have been ratified, but that was part of Ventifact's point about flawed decision-making processes.
...but we're talking about a comic strip here.