You are not familiar with the idea of "departamental scapegoat"
I know a few professional ones. You look at their career and it reads fail, double fail, quadruple fail and you wonder how the f*** could these guys be still employed. Then you realize - they are teflonated and they come and sell that as a service.
You have a project which needs to be failed - you bring them in, they fail. They are sacked (and quite often paid a golden handshake), you have assigned the blame, they go onto their next project.
Lovely job if you can have it.