An ideology is a complex of ideas or notions which represents itself to the thinker as an absolute truth for the interpretation of the world and his situation within it; it leads the thinker to accomplish an act of self-deception for the purpose of justification, obfuscation and evasion in some sense or other to his advantage.
Nietzsche, driven by the absolute demand of his existential truthfulness, could not abide the bourgeois world, even when its representative had human nobility.