Its also strategic for Israel to let Hamas do what they did, so israel has an easy to sell pretext to invade Gaza and afterwards have another land grab for them.

If you consider that Hitler did the same when someone burned the parlament ion Germany, and that Neytaniahu is financing Hamas with the purposed of making palestinians weak, It can really be that Israel let Hamas in on purposed, to reach its strategic goals.

Below an article from Times of Israel, telling that Neytaniahu financed Hamas for his strategic goals.

https://www.timesofisrael.com/for-years-netanyahu-propped-up-hamas-now-its-blown-up-in-our-faces/