For more than the last decade Israel spent 0 efforts on raising the Gaza population and completely left them to run their own educational/inner governmental funding. That proved to be the worst mistake they could ever do, as that educational program is pure hate fuel for religious extremists and the government funding (which btw is a lot of funding from foreigners) was used for rockets and anti-tank ammunition instead of safe houses for civilians. Heck, the only safe zones are the underground tunnels, which are only used for Hamas fighters.
All that means is that Israel should’ve either completely hammer down on stuff going in, and truly be like china murdering muslims, or completely run the region themselves, which is basically colonialism. Which option is good? None. Who can be blamed for that? The Palestinians leaders.
Don’t get me wrong, Israel’s leaders also chose a very bad option of leaving it alone and letting it grow into a monster, but let’s face it - they had no good options on what to do with Gaza. So blaming everything that’s happening purely on Israel, is just unfair. What could they have done to prevent this?