Whose fault is is if the world is coming to an end?

It might surprised you but it might just be the Rabbi's fault. I am reading this great book: Sacred Treasure - the Cairo Genizah by Rabbi Mark Glickman. He claims that "the only person who ever knew how to pronounce God's name was the High Priest. It was the word he uttered during his annual Yom Kippur visit to the Holy of Holies as he atoned on behalf of himself, his family, and all Jews everywhere.
If an impure thought entered his mind as he uttered God's name, the world would come to and end. One word."
There you have it. OK Rabbi Seligman, no impure thoughts on Yom Kippur or we are doomed.