Occam’s razor suggests that he probably just meant what he said: that Israelis should remember the atrocities committed by Hamas and other attackers. There was nothing in Netanyahu’s speech, or even the Torah’s passages about Amalek, about “no uninvolved civilians”, so it seems like a stretch to say that Netanyahu deliberately conveyed that message as a subtext.

You say the chants occurred “shortly afterwards”, but wasn’t that in December? Whereas the speech you’re drawing a connection to was in October.

If we’re going to accuse people of the most heinous crimes, we should have much more solid evidence.