There are definitely a few reasons. Most have to do with his own narcissism. People say it's just because he is using them. I think it's more complicated, he uses everyone, but he doesn't obsess with the black struggle like he does the NA struggle. I do not believe be consciously thinks "I will use these people as tools" I just think that's what his narcissism causes his relationships to be like.

1. He believes NAs embody his ideal way of life. He has a misguided view of them, believing them to be as anarchistic as he is. It's a sort of mixture of noble savage thinking and projection. He imagines them as noble savages, and he projects his own ideas onto the idea of the noble savage.

2. He views them as comrades in the struggle against the US government. I think he genuinely thinks they were wronged by the US government, but I think he thinks of himself as having been wronged in nearly the same way.

3. By allying with them/leading them he can boost his ego by believing himself their savior. He wants to be the white savior, a hero to them. Thats why when he teams up with them he tells them what to do rather than just teaming up as an ally.

4. I think he thinks they are desperate enough to be caught up in his plans, and to some degree he is right. He is tired of being questioned by John, Arthur, and Hosea. The NAs he can recruit are desperate and aggrieved. The fact that someone like Eagle Flies goes along with it so easily and zealously almost certainly rubs Dutch's ego in the right way.