yes there is two probable here
1) they decided to go big instead of slow death , in the wake of Abraham accord and normalization and no body supporting about the cause , they stared this , also considering in man to man combat they have higher chance for inflicting casualties on other side
2) another is Israel infiltrate Hamas , since they are very very good at this ( Mosad) and played on both side , since there are quite a few news that attack was happening for 8-10 hours and and reaction time which should be 5-10 min did not happen ( specially that areas is highly monitored ) , even there are lot of news that lot of death on Israel side happened because of their perpetual fire , number were manipulated ( 1400 to 1200 some thing now) , lot of disinformation and misinformation
But I think one really to understand the elephant in the room , role of Evangelicals Christian and their love for Israel , giving undue support to Netanyahu right wing to do what ever they want ( which means no peace and unstable area and more death on both side)
US seantor talking why they support Zionism
https://twitter.com/Cernovich/status/1717363331324088535
Christian Zionism part 1: Tracing the Lines of a Warmongering Heresy
https://www.youtube.com/watch?v=AlRjFBSNy1M
Why Evangelical Christians Love Israel | VICE on HBO
https://www.youtube.com/watch?v=Fo77sTGpngQ
America’s Christian Zionists: Israel’s strategic weapon?
https://www.youtube.com/watch?v=bprofax5SPk
One in four American Christians say they believe it is their biblical responsibility to support the nation of Israel.