I don’t really agree with this framing. There are plenty of things that Israel can do to protect their citizens and weaken Hamas that don’t involve murdering thousands of civilians.
It’s debatable whether this conflict will even weaken Hamas long-term. I think it’s been a huge boon to their image and it seems fairly likely they’ll be able to rebuild even stronger when the killing ends.
The best way to destroy Hamas is to make peace, stop killing and oppressing Palestinians, grant them equal rights to Jewish Israelis, redistribute land fairly, educate the populace and promote real democracy. Hamas’s extreme views won’t be popular in the absence of a great evil to scapegoat.