I'm sorry if my "war rhetoric" disturbs you but my country is at war, my neighbours were murdered and kidnapped by Hamas and these evil terrorists are still trying to kill me and my children by firing deadly rockets at my city.
I hope you are safe, but don't delude yourself - these barbarians are coming for you in Europe too. Israel's victory against Hamas will set back the Islamic extremist barbarians, but unless Europeans wake up, arm up and realise that peace is only secured by victory in war, then either the Islamists or the Russians will bring war to you whether you are interested in it or not.
Go mock your enemy for losing the war they started; I guess that makes sense. The more they look incompetent, the more one has to wonder how they could carry out that attack to begin with. Bear in mind that it seems propaganda is a part of the Hamas war plan - to portray Israel as a bully. Also, if your neighbor comes over and kills your dog, it doesn't seem right to me to kill his dog in retribution. Just deal with the aggressor and mourn the innocents who had to be killed in doing so.
What to do afterwards? I think Germany is our closest example. We didn't scatter their population to the nations like what happened to ancient Israel, but we did keep bases there so that this wouldn't happen again. The analogy breaks down a little in that Germany was a sovereign state, while Palestine is just the name for that region.
I do fear the bigger war here, though. If Israel wins this and reclaims its territory, there seems to be a large population of people around the world who will take the offensive if those they serve give the order.
Many people fear a larger war but by which countries exactly against Israel. Having just seen the IDF's immense superiority, Iran is very clearly not wanting a wider war. Syria and Lebanon are failed states with no real military capacity.
Turkey's Erdogan engages in harsh rhetoric but does nothing practical. Turkey cannot risk confrontation with Israel because it has many historic enemies (Greeks, Kurds etc) that will pounce if Turkey is weakened.
Arguably Israel should engage in a wider war to defeat all its enemies completely while it has such huge military superiority. It may not last forever.