Who cares what liberals think? Certainly every world leader cares what liberals think, because capitalism is the current world economic system and liberalism is therefore the default hegemonic ideology of most of the world. Netanyahu doesn't give a shit if you personally don't forgive him. He knows that history has demonstrated that other states have been forgiven for larger crimes once enough time has past. He knows that other states will have a material interest in normalizing relations in the conditions that he believes will exist in the future, and so most people will forget any historical crimes that interfere with that day to day normalizing of relations when the dust settles.

That's the real difference of political opinion going on in the Israeli state: the most reactionary elements of Israeli settler society want to get the extermination out of the way quickly so that normalization can begin. They believe that the longer that the extermination remains incomplete, the more likely it is that it can be interrupted by resistance or intervention. The moderate Israeli settlers would prefer to conduct the extermination slowly. They believe a steady gradual expansion of settlements and reduction of the Palestinian population will eventually bring about the same end goal, but with a lower risk of creating a single incident big enough to justify external interference. The progressive Israeli settlers would prefer to handle Palestinian removal with something akin to the American Indian reservation system, where Palestinians can be walled off in isolated ghettos to be kept alive in a token sense and forgotten about.

In all cases, Zionists are unified in their political objective, and they'll continue pursuing it by whichever strategy they believe is most effective until they either succeed completely at removing the population, or are forced to stop by Palestinian armed resistance and international intervention. Israel won't stop while they still have infinite resources and imperial protection. The US won't stop pursing its material interest in the region out of boredom or coincidence. The US will only stop if some combination of international factors change so that further investment in the project would stop being economically viable.