[marcosdumay]

I don't understand your theory, sorry. I can't tell if you are right. So, I'll just put my understanding here.

There are people that assume that both: 1 - 256 bits aren't enough entropy to create a long chain of random numbers in a CSPRNG; 2 - 256 bits (after adjusting for known attacks) are enough entropy to encrypt a long chain of data in a symmetric cryptography algorithm.

Since encryption and creating random numbers are normally the same operation, 256 can't be both enough and not enough.

I don't know if SSL even supports symmetric encryption with more than 256 bits of entropy. I've certainly never seen it.