Caterpillar even supplies the IDF with bulldozers just for this purpose, which then get up-armored and sent into Palestinian civilian areas to do this (including unmanned versions).

https://en.wikipedia.org/wiki/IDF_Caterpillar_D9

2) Accusations of genocide, whether they stand up or not, are great fodder for whataboutism discussions. Let's say the world's two largest economies, the US and China, decided to start sanctioning Israel for what's happening in Gaza. You could expect other countries to start threatening actions against the US and China over their previous or current genocidal behaviors. These are obviously not things that the US and China want to deal with.

If anything, the more apt historical comparison is to the Czechoslovakian and Polish partisans who wanted nothing less than to harry the Germans on (or within) their borders before the war. The British and French ambassadors (i.e. Qatar, etc) took great pains to try and convince the Polish and Czechoslovakian governments to restrain their partisans from attacking German people or positions, since they suspected Germany would use any and all provocation, no matter how small, as a casus belli. Anyone who's read a bit of WW2 history also knows how often the German government attempted to engineer exactly these kinds of events to justify their aggression.

It sounds straight out of the Likud playbook, doesn't it? But in what universe does an attack that kills 1000 people, a good number of them active duty soldiers, justify killing and maiming over 100,000 civilians and leveling hundreds of thousands of buildings? If the shoe were on the other foot, this implies Hamas also has the moral imperative to do just the same to Israel. That's moral relativism for you.

Perhaps Europe had a better understanding of this topic when they instituted the Geneva Conventions and other international humanitarian law after the war than we do today, 100 years out, trying to now claim none of it actually matters and the means justify the ends.