Any gun safe capable of being opened quickly by an authorized user would be able to be opened just as quickly by an unauthorized user, aka a child.
I agree with your assertion though, that keeping a gun handy in the presence of an adult is distinctly different from keeping a gun unsecured and not in the possession of an adult. Good point.
Any sources to back up your claims? 20% of Israel's citizenry are ethnic Arabs and practicing Muslims. Israel has 100% air superiority over Gaza, if they wanted to ethnically cleanse Gaza or the West Bank, they certainly have the ability to do so. But there is no evidence that they want this. None that I've seen at least.
You know who does want to ethnically cleanse another culture/religion from the world? Hamas. Iran, Hezbollah. The Houthis. ISIS. The Taliban. What do all of these groups have in common, hm? Israel is surrounded by militants who have sworn to eradicate all Jews from the planet. In light of that, I think Israel is showing incredible restraint.
Leftists (in the US, the far-left equivalent of the "alt-right") are the ones currently rioting and protesting across major cities and college campuses across the West. Liberals are overwhelming supportive of Israel. Conservatives are overwhelmingly supportive of Israel. It's the radical extremists who want Israel destroyed.