The point is that because there are always mistakes in everything, that the NSA is never involved? Strange, because I'm sure they've been implicated more than zero times.
NOTE: I have no opinion on their involvement in the goto fail;
The logical negation of "there are rarely these easy mistakes in something, so the NSA must always be involved", is not "because there are always mistakes in everything, that the NSA is never involved".
NOTE: I have no opinion on their involvement in the goto fail;