Exactly. It's not ok to say it one way and not the other. And as far as whether Jack eventually nominates Kemi or Jessica, so what. Saying we need to be aware of "Optics" is just another way of saying he must keep people in the game based solely on skin color.
I don't especially care for Jack, but if as HoH he doesn't like a person and wants to put them up, so be it. He has never mentioned race as a factor and we shouldn't make it one.