You'll note that Schneier's criticism of NSA as the source of the DRBG backdoor is that it was too obvious (i.e. the work of clowns, not the work of the most-ad

You'll note that Schneier's criticism of NSA as the source of the DRBG backdoor is that it was too obvious (i.e. the work of clowns, not the work of the most-advanced cryptography outfit in the world), not that NSA wouldn't engage in that kind of activity. He also mentioned how it was NSA (and NSA specifically) who were 'so insistent' on including that 'obviously' broken algorithm in the standard. I mean, that question kind of answers itself (even at the time!) as long as you're not presupposing that NSA turned pure white in 1995.