I think users would prefer that covert government agencies not know where to find the authors, either to avoid undue influence or surreptitious hacking of their development machines to insert backdoors and other nefarious things.
Plus, as TFA states, the code is all out there in the open and able to be reviewed. Does it matter who wrote it at that point?
Shouldn't it be the opposite so we all know who we're relying on? It's the same question I'd throw at Bitcoin.