Sure, why not?Are people saying it should have been Geordi not get respect from the other Starfeet officer because he didn't feel black people make good captains?
Because bigotry is not completely gone. There are still biases, opinions, stereotypes, and negative opinions. Yes, it's allegorized by aliens, but that doesn't make it less Star Trek if it goes towards humans.If so how does that even make sense in the context of Trek?
Again, sometimes it's the anvil that needs to be dropped.
Yes, and TOS' and other series power was not in saying "our humanity is better" but saying "everyday we are able to make choices that make our world better, be it exploring, cooperation, diplomacy or fighting when necessary." The way you make it work is by saying how you got there, not why you're so superior.The world of Star Trek is completely different than our present day