The author of the article, Matthew Daniel Green, knows the capabilities of US to put backdoors into software and standards very well. Green's blog entries on NSA's backdoor in Dual_EC_DRBG, and RSA Security's usage of the backdoored cryptographically secure pseudorandom number generator (CSPRNG), have been widely cited in the mainstream news media.

https://en.wikipedia.org/wiki/Matthew_D._Green