Why do we have to be left-wingers or racial motivated?
We just take the facts for what they are and try to find an explanation tat make sense to us within the rules of the Star Trek universe. You are the one that doubt the given facts. We see dark skinned and 'asian' Vulcans, so they obviously either exist or have to question the whole concept that the alien shown resemble this given depiction. That's what we are doing. It seems unreasonable to cherry pick what to accept as given and what not.
the argument has little to do with Asian or black Vulcans. The argument is that IF we found another humanoid species and IF that species looked like white people, would there be a dark-skinned equivalent from the same planet.
It has nothing to do with Tuvok, who is my favorite Vulcan, by far. My favorite Tuvok scene:
Tom Paris: If you wanted to, you could recreate Vulcan in your quarters with that system.
Tuvok: Why would I want to?
Tom Paris: A little taste of home in the Delta Quadrant? Think about it - springtime on the shores of Lake Yuron!
Tuvok: I require a desk and a bed, nothing more.
Tom Paris: You're missing the point.
Tuvok: No doubt.
Tom Paris: These people have been traveling for 400 years. They've learned a thing or two about living comfortably.
Tuvok: Our systems are more than adequate.
Tom Paris: (Exasperated) Ah! I give up!
Chakotay: After only two minutes? Tuvok, how do you do it?
Tuvok: I wait until his own illogic overwhelms him.
Here's my second favorite scene, but Tuvok isn't in it:
EMH-SEVEN: Ensign.
KIM: Ow, argh, ow. Where the hell have you been? I had to fake a seizure before the guard would let me see you.
EMH-SEVEN: Calm down. Seven and I have been making progress.
(The EMH is downloaded from Seven's systems into the mobile emitter.)
KIM: Did you get a look at their computer?
SEVEN: During the one brief moment when the Doctor wasn't indulging himself.
EMH: I think I've shown considerable restraint, under the circumstances.
SEVEN: Kissing Ranek on the bridge. Is that your idea of restraint?
KIM: Kissing?
EMH: Not that it's any of your business, but if you must know Ranek kissed me.
SEVEN: And the massage you got from Lieutenant Jaryn?
EMH: Entirely therapeutic!
SEVEN: You became sexually aroused in my body!