@fsi I believe that's demonstrating my point.

Allowing that Crypto's (closed-source) software was more capable of serving NSA intercept interests doesn't refute the fact that the mechanical system had been doing just that.

Free Software experiences with SSH (Debian time-of-day seed 86,400 values), OpenSSL, and others, shows that even unintentionally introduced weaknesses can persist for years.k

Long-standing suspicions of NSA "blessed" crypto seed values likewise.

Or Intel's HW RNG.