I suppose an optimist could argue that if Palestine achieves statehood, they would be incorporated into international law which means Israel could be compelled to stop the genocide and further genocides or face intervention. But that's the problem. Who's going to intervene? Most of the powers have business or security interests in the region that only a developed "country" like Israel can address, unless they decide to pivot to the new Palestinian government. Also, it's a potentially ripe moment for western powers because if Palestine is incorporated into international law, Hamas may lose the leverage of being considered non-state combatants.
But overall, I do agree that a "two state solution" is not feasible. You simply cannot co-exist with someone who fundamentally sees you as subhuman and wants you gone, especially when they run the government, have more weapons and money than you, and have the backing of the entire west.