You know inside that acting from jealousy or greed or vindictiveness are all incorrect feelings and only lead to trouble. Thus it is a useful principle..
I would posit based on experience in the world and as a longtime health professional that a lot of those who habitually act from jealousy, greed or vindictiveness DON'T in fact recognize they are "incorrect" feelings.
They are their feelings, they perceive them as legitimate, they embrace them as old familiar friends, and they act on them.
Hence my lack of acceptance of "correct" or "incorrect" feeling as being very useful constructs.