The NSDAP was the expression of a sick and delusional regime

Oh my, what an absolute, certain statement. Are you championing the concept that nothing ought to be absolute or certain regarding human affairs? By what standards (gasp!) would you judge the policies and philosophy of NSDAP to be "delusional"? As you write in your last sentence, NSDAP merely has a "different world view [that] remain nebulous to you."