I don’t think there’s much chiddush in the boy’s words (according to Randomex’ translation; I didn’t see it). The shittah of the Satmar Rebbe zt”l is easy enough to find by just looking at the hakdamah to Vayoel Moshe (I googled and found a free download).
B’ikkar, he holds that our enemies were empowered by our attempted violation of the three shavuos. The historical cause and effect is kind of irrelevant when viewed through R’ Yoel ztl’s perspective