To a considerable extent, yes, historically. Israel is an important cause.

And you can find cases historically where the Palestinian leadership has been the obstacle to peace, and the right-wing Israeli leadership is the effect. (C.f. Oslo.)

And so too is antisemitism the cause of the obstacle and Israel the effect.

There are many effects playing out.

However, is Hamas not made of people? Can people not choose to strive for what they think is right in ways that are peaceful and moral as well as ways that are brutal and savage? Need I remind you how apartheid in South Africa was resolved?

So one could agree with everything you said and yet still condemn Hamas in the strongest terms and, especially in light of prior experience with ISIS, the Taliban, al-Qaeda, etc., conclude that there was no practical option except to destroy Hamas.

When society creates a mass-murderer, even as they (perhaps) regret not making a supportive society, they still imprison or kill the murderer.