The Goldstone Report establishes the credibility of the accusations directed at Israel with respect to its tactics used during the 2008 - 09 attacks on Gaza, but was not able to facilitate the next step that would have involved activating accountability mechanisms either within Israel or at the level of international society.
The weaknesses and biases of the international mechanisms of accountability make it seem desirable to extend the domain of accountability by empowering domestic courts to act as agents of the world legal system. Even if there is no consistent application of Universal Jurisdiction, it still leads those who might be prosecuted to alter their travel plans to avoid even the complication of waiting for a complaint to be dismissed.
There is no effort to acknowledge some equivalent accountability by associating "terrorism" with all violence that is deliberately aimed at civilians, either directly or as foreseeable effects of violent acts, whether the actor is a non-state individual or group or the state.