It makes both sides sound bad, but because the IDF has the support of the civilized world the standard should be a little higher. Israel is not like that though - they are very tit for tat and immature in their messaging which only makes them look worse.
Also if the war is Israel vs Hamas in Gaza it makes people wonder why they are killing Palestinians outside Gaza like in the West Bank and in the illegal Jewish settlements.
Bad look for Israel.
Of course, completely dissolving and expelling either people (Israeli or Palestinian) is not feasible with so many millions of people. So neither side will actually get their wish.
It has to be 2 states, both of which are equal members in a larger league of states perhaps in the Levant.
Need a peace-loving leader post-Netanyahu in the region to unify people and get them forward-thinking with technology and a secular revolution. Something for the people for the region to all identify with that isn’t rooted in violence and oppression.