That incident may have more to do with time. The human impact of all events tends to lessen over time and with each new generation. Also, today’s school kids may not be spending much time examining the atrocities connected to the Holocaust.
“... today’s school kids may not be spending much time examining the atrocities connected to the Holocaust”
I have to completely disagree. My kids read book after book after book. Each year seemed to dedicate an entire section in history, english and reading to the Holocaust. IMHO, what I saw was “over-kill” (no pun intended). The kids become de-sensitized to it because it included several years of reading the same books and listening to the same lectures.
I think it has most to do with history no longer being taught objectively, if at all. There have been three generations going thru getting indoctrinated by Howard Zinn and other left-wing revisionists. They make Israel not about a people chosen by God, but an "exclusionary, racist" people who are mean to Palestinians. And working backwards, the Holocaust was no big deal (according to cultural marxism), and the muslims' cooperation with Hitler meant it couldn't have been all bad.