I feel the emotional entanglement is a bit quixotic. If moral propositions didn't have an emotional component, then they wouldn't be felt as imperatives compelling us to act or not act depending upon its valence. A proposition about homicide is just a neutral abstraction without some emotional sense of should or shouldn't attached to it. So, on the one hand, the entanglement with emotion presents epistemological difficulties, yet without the entanglement with emotion the intuition is no longer moral.
Does this mean that morality necessarily entails epistemological issues? Maybe.
Does this mean that morality necessarily entails epistemological issues? Maybe.