There was no news coverage because virtually no expert in the field believes it to have been an NSA backdoor. The arguments suggesting it is were debunked by Bruce Schneier more than a decade ago. Among them, the obvious: Microsoft held the other key, the "non-NSAKEY" key, and could do anything that the NSAKEY can do. If NSA can coerce Microsoft into adding a whole new signing key, it could just as easily have coerced Microsoft into signing things with Microsoft's own key. Given that, an "NSAKEY" backdoor is irrational.
In promoting the notion that "NSAKEY" is a backdoor, you're lining up against the likes of Bruce Schneier and lining up alongside the likes of WorldNetDaily, which is indeed among the top Google search results for [NSAKEY backdoor].
In promoting the notion that "NSAKEY" is a backdoor, you're lining up against the likes of Bruce Schneier and lining up alongside the likes of WorldNetDaily, which is indeed among the top Google search results for [NSAKEY backdoor].