When I was in high school, the person who invited me to read Howard's works was a self described white supremacist. He and his friends all seemed to think he expressed their world view. But, you don't have to take my word for it. Howard can speak for himself:
In a letter to H. P. Lovecraft, Howard talks about a rancher who was investigated for the murder of a Mexican. "just why so much trouble was taken about a Mexican I cannot understand."
In reference to a trial in Honolulu where native Hawaiians were accused of rape, Howard wrote, "I know what would have happened to them in Texas. I don't know whether an Oriental smells any different than a nigger when he's roasting, but I'm willing to bet the aroma of scorching hide would have the same chastening effect on his surviving tribesman."
"I guess you know if a Negro is found on the streets after dark in Coleman, Santa Anna, and several other towns around here, they run him out of town. Chances are they might tar and feather him."
"Let me tell you something, girl, that you don't seem to know. Those people come from a different line. They have different blood - "
And it isn't hard to imagine that the narrator who says, "Born and raised in Arizona of good Virginia fighting stock, I held "niggers" in contempt and was a strong believer in Nordic and especially Celtic superiority," is expressing Howard's personal point of view.
http://www.rehupa.com/OLDWEB/updates/romeo_southern.htm
(I forgot to mention earlier: If Crowfoot or anyone else decided to describe themselves as trangendered that wouldn't change my opinion of them as a person or their achievements. You kind of said that like it was a bad thing.)