In this specific case, the disregard for volition. In the more general sense, stretching the term by analogy to describe any behavior from an agent with a significant power advantage that wouldn't be called "Friendly" if done by an AI with a power advantage over humans.

The implicit step here, I think, is that whatever value system an FAI would have would also make a pretty good value system for any agent in a position of power, allowing for limitations of cognitive potential.