> I don't care what they built. If you want to fight them, man up and go get them! US forces did this in Iraq. Let's see gods chosen people be so brave.

It's a war, military strategy doesn't tend to put much emphasis on making wars a fair fight. Israel isn't under any obligation to go out of their way to preserve structures built on top of military infrastructure(i.e. tunnels). There were certainly not tunnel networks in Iraq like there were in Gaza.