No, that is not "natural." That is a deliberate choice to falsely depict humanity as being majority-white when it is of course not.
You frame it as "natural" to have a majority-white cast if the audience is majority-white. But another way to describe that behavior is to say that it's a deliberate decision to appeal to the (at best unconscious) biases of a white audience who wanted to see themselves depicted as the center of the universe.
...It was absolutely forced whiteness.
Okay, but that doesn't make the forced whiteness of the ENT cast any less of a deliberate decision...
So, yes, when a show that pretends it's about humanity's future instead depicts the nation of its creators as the default setting for the human race, that is indeed ethnocentrism.
...Both operated on the unquestioned feeling that white guys are the default setting for the human race. That makes both works ethnocentric.
It's very simple:
If all people are equal and your goal is to depict humanity's future, then your obligation is not to depict humanity as looking primarily like the culture you come from. Because the culture you come from can only ever be a minority of the human species.
If you instead decide to depict your culture as the norm that the rest of humanity is a deviation from, then you're being ethnocentric.
That's not a matter of interpretation. That's just objectively what you're doing.
Yes, Star Trek has historically been far more ethnocentric than we often like to imagine.
...The only way depicting your culture as the default setting for the entire human race could possibly not be ethnocentrism is if your culture makes up the vast majority of the human species. But no one's culture or race does.
...I'm sorry, but it would by definition be such. The vast majority of humanity are not Chinese. If you're depicting humanity's future rather than China's future, then you should not depict Han Chinese as the default setting for the human race. If you're depicting humanity's future rather than the United States's future, then you should not depict whiteness as the default setting for the human race.
@Sci, your repeated use of "deliberate choice," "deliberate decision," "forced whiteness," ethnocentrism, the calculated depiction of the ENT cast as "the default setting for the human race" - and your insistence that these claims are ironclad, incontrovertible fact, must stop. Your claims are your personal opinion. I see no citations leading to direct quotes by the staff and writers going on record that they are racist bigots. Do you have any such citations? Interviews? Video?
Other members have expressed differing opinions, but you have immediately dismissed them, choosing to continue casting aspersions on the staff's moral characters - the sort of accusations that now often lead to the accused being bullied, shunned, cancelled, stalked, fired. Moreover, you are using your opinion as a cudgel to try to beat your fellow members into submission, repeating yourself over and over, derailing the thread with your insistent spamming.
It's time for you to agree to disagree, and move on. This is your last caution. Thank you.