While Fitzgerald may have hidden his wisdom by having a hated character speak it, i believe he meant it when he said "the Nordic race is responsible for all the good things in the world". It is debatable whether that would be a good way of spreading propaganda

Yesterday I made decisions. Today they proved to be correct. I’m making decisions today, for tomorrow. Thinking ahead is apparently racist. I’m not just white, I’m a white supremacist. How? Why? Well I’ll tell you, most of my fellow white people are dumb as a box of rocks. This can easily proven just by watching ring doorbell cameras. Most white people are idiots. But I don’t judge based on race. I judge on the 5 second IQ test. Ask me how