[tptacek]

Reducing the impact of a CSPRNG state compromise is a basic design goal for CSPRNGs, and you don't need ECC to do it; the "NSA backdoored" RNG you're referring to is one that no system anyone knows about actually uses, for that reason.

Again: you're making a point that has nothing to do with my comment. If you don't trust RDRAND, don't use it. But you should still be using the OS's CSPRNG. Just make sure your OS isn't using RDRAND. Done and done.