My impression is that after moving boulders, I finally established that there was a ban, it was official, and it was racist. After jumping through many other hoops, over more objections, when I ask Mormons to confront the implications of this for their belief system, they prefer to close their eyes, plug their ears, and think about something else. This does not surprise me. In fact, it's pretty typical of Mormon's critical thinking about their religion. At least, the ones who remain Mormon.
From my perspective there was never a question that there was a ban...that it was official...or that it was racist. My issue is that you've never shown it was a revelation that instituted this policy. I've asked you time and again for the revelation and the best you can do is point to a discourse given by Brigham Young. That's not revelation. So, excuse me if I don't fall lock-step in line with your point of view, but the fact is, you've failed to show anything worth thinking about because you can't point to a revelation.