I think that will have to be answered by future historians.
Clearly, it has had an enormous cost on the population of Gaza.
But the cost on Israel has also been enormous. It has lost the support and goodwill from a large part of the population in the global south and Europe, and even some in North America.
It still has the unconditional support from the governments of Europe and North America, so time will tell if there will be any consequences for Israel of the "war".
Israel had lost the 18-25 cadre in the west in any event, as the heavy bias in academics is pro Palestinian. The current shooting war just gives those kids a chance to parade or - since it's cold outside - post on social media.
7 October grabbed the attention of people in my age group who previously ignored the conflict as "bad on both sides" and made us think that the only feasible solution lay in the extermination of Hamas.
Militarily occupying Gaza is so easily within the grasp of the IDF that world support doesn't matter in any event. And it's pretty notable that the neighbouring Muslim countries verbally denounce Israel, but probably cheer it on behind the scenes. Hamas isn't popular.
What I see is that Israel will gradually take over the entire Gaza strip and make an attempt to administer it using Gazans unconnected with previous Hamas power structures - i.e to de-Hamasify Gaza in the same sense that the Allies de-nazified Germany after 1945. Whether this works or not remains to be seen.
If you read and follow Alkhatib (the guy I posted above), you'll glean that Hamas is not universally popular among Gazans, although Alkhatib loathes Israel as well.
The best outcome is that the extremists on BOTH sides are removed from power and influence. And yes, that includes Bibi and his buddies, as well as Hamas and Hezbollah.