Well, agreed... but wouldn't it just be a fait accompli at the time of TOS, without the need to label it as such? I'm not saying that people won't value their history and culture, but I'm hoping that we don't still rely on hyphenated descriptions of ourselves in the future -- or maybe I'm just projecting my own hopes here.
That's just my point. Uhura isn't hyphenated. She's not African-American, not "Penny Uhura" -- she's fully African, her name is fully African (aside from that stupid damn feminine suffix), her native language is KiSwahili, etc. What the hell is wrong with that? "Ourselves" isn't just America. "Ourselves" includes everybody, including people who are born in Africa and speak KiSwahili and who only learn English as a second language. That's not "labeling," it's just a baseline identity every bit as much as your own is.
The problem with those "cultural identity doesn't matter" arguments is that the unspoken undercurrent is usually "Everyone should act like my culture rather than somebody else's." Would you be as quick to say cultural identity doesn't matter if you were the one expected to conform to someone else's cultural standards instead of your own? If it were a future where everyone spoke Chinese, say, instead of American English?
Somehow I've started something when my intent was never to get anyone worked up. I only wanted to point out my desire to be past the need to even think about such things. I understand such things are very important in today's context, but I was honestly trying to be optimistic in my outlook about the future.