I just finished that book today. There's so much redpilling material in there and because it mentions debt-capital and bankers and only hints at the nosed ones, it's easier to make other people relate to it.
Nobody likes interest or greedy assholes and most people can see the injustice in incomes that come without working. Especially those who work themselves.
It is really important to discover as many angles as possible from wich we can open the world of national socialism to people around us, without scaring them away.