From this he predicted a 20th Century of psychopathic, murdering leaders who would cause tragedies not then dreamed of.
He was right and this differentiated him from the usual village atheist that has always existed but is seldom of influence. In a certain sense he was affirming Glaucon's assertion in Plato's Republic that one has difficulty proving a moral life is better than an immoral life; hence, the anything goes as long as we believe the outcome is more important than the means.
Also, he asked if Rationalism and the New Sciences, which were created by men, but had unforseeably killed God in their hearts, would not ultimately force these men to become Gods themselves, just to appear worthy of their deed. This is one of the basics on which he founds his transhuman, his Übermensch.
I watched Angela Merkel on TV at the dedication of the rebuilt Frauenkirche in Dresden. She sang all the hymns without looking at the hymnal. I took this as a good sign.