The real lesson of October 7th is that, on October 8th, Israel should have carpet bombed and fire bombed Gaza to a pile of ash.
The Western media are suckers for "suffering civilians", many of whom are Hamas collaborators.
If this was WWII, all the News Reels would be about suffering German and Japanese civilians.
War needs to be brutal and complete to discourage future aggression. Leaving Hamas to live to fight another day will lead to something worse than October 7th.
What helped keep the peace in the Cold War was mutually assured destruction, not mutually proportional repsonses to aggression.