Le Guin really used it as a moment to drive home her views on diversity in "A Whitewashed Earthsea - How the Sci Fi Channel wrecked my books" here [1] (I've seen the Earthsea adaptation, and while I'm not as critical about it as she is, it really is a very different story, and best watched as a story inspired by Earthsea).
She's always been very vocal about this aspect, and how the diversity in her work was very deliberate and "snuck past" publishers and readers defences (at the time first published) by first mentioning it a bit in, and how publishers and cover artists at various point tried making the characters white:
> My color scheme was conscious and deliberate from the start. I didn’t see why everybody in science fiction had to be a honky named Bob or Joe or Bill. I didn’t see why everybody in heroic fantasy had to be white (and why all the leading women had “violet eyes”). It didn’t even make sense. Whites are a minority on Earth now—why wouldn’t they still be either a minority, or just swallowed up in the larger colored gene pool, in the future?
[1] https://slate.com/culture/2004/12/ursula-k-le-guin-on-the-tv...