Yes, sounds right. Because you can't hit a killer with stone if you envy your rich neighbor.

There's a reason Nietzsche labeled it slave morality. It undermines people's confidence to act and judge other appropriately, revalues weakness to be a virtue and strength as evil, and demands that people stop trying to change the world for the better and focus instead on their own supposed guilt. It's morality developed for people who are structurally unable to act (because they are commoner serfs with no power) to make them feel justified and satisfied with inaction.