See I think the key point is that you assume at least half of all Gazans are guilty alongside Hamas because >50% of people in Gaza supported Hamas in the 2007 elections. Even assuming similar proportions now, I would argue that a large number of that supporting group are only the victims of propaganda, rather than organically and sincerely taking that position.

There were more than 2 million people in the Gaza strip, of which only 50,000 were members of Hamas. The rest are civilians, people who on one side face repression from Israelis and on the other face Hamas telling them they can make things better.