I don't bother to follow that mess. There's nothing I can do about it, so it's pointless to try. But, in response to your accusations, I looked and found nothing that supported the story.
Your quote confirms that Hamas used the school as a human shield, deliberately firing from there, which those near knew. But rather than evacuate, they stayed at the launch site for an attack on Israel. Why? Oh, Hamas refused them passage to safety. Hamas kidnapped them for human shields. And Israel is in the wrong for hitting Hamas back, because Hamas had kidnapped human shields still on site.
Yes, all Israel's fault.