The high-profile failure of one project (particularly when so much of it was carried out by private contracting, a process known to be more corrupt and wasteful than just using federal employees) is not, in and of itself, evidence that the federal civil service is abnormally wasteful or corrupt when compared to other organizations of similar size or scope, or when compared to combinations of organizations forming an interlocked unit of similar size and scope.
Basically, the federal government can trivially be labelled suboptimal, but calling it abnormally bad requires evidence that you can do better. Overwhelmingly, this is not what we see people bringing forth. The claims we see made are, "This organization is suboptimal for the job it currently does, therefore we should destroy large parts of it entirely. The important jobs done by those parts don't need to be done, because we say so."
You should click that foseti link a few comments up.