Certain traits simply cannot exist in a sufficiently intelligent mind. E.g., any "mind" of any type that's sufficiently intelligent will not tell you that 1+1=3 unless it's roleplaying, etc. It doesn't matter if it was trained via gradient descent or any other method. The comments you are responding to, and the original quote from the paper, are suggesting that absolute loyalty / subservience is similarly fundamentally incompatible with intelligence, not just a certain training algorithm or mind architecture. Of course, we have no actual evidence either way.