Roddenberry was as human as we are but he did have a vision and put it out there for us to see. He was brave and creative and not scared of what other men could do to him for his values.
I will not question your personal choice of heroes.
However, Roddenberry had an idea for a TV show that he hoped would sell and be a commercial success. That's it. Sure, he wanted it to be intelligently written and when he went to cast it, he may have wanted some diversity to the cast members.
But, ultimately, he was just trying to make a good TV show. The idea that he had some grand vision to share with humanity and that Star Trek was his vehicle for doing that is revisionist history, begun largely by Roddenberry himself during the booming popularity of TOS reruns in the 70's.