... after being held (somewhat) accountable for murdering a bunch of Iraqi civilians. It's not like they came forward and confessed to wrong doing immediately after. Who knows what they were involved in before that incident.
It took me a minute to understand your implication here. Yes, it took them a while to make that PR move of a name change. I'm sure it was all carefully orchestrated, and was not in itself an admission of guilt or an apology. In fact there was a prior rebranding which kept the Blackwater name but changed the logo to look more like the scope of a gun, which is not exactly the move a company would make to distance themselves from the negative light of being mercenary thugs.