Amazon and Embracer Group have the rights to the exact same source material, just for different mediums. Embracer bought the movie/stage/merchandise rights for The Hobbit and LotR that have been passed around since Tolkien sold them himself, while Amazon got the TV show rights directly from the Tolkien Estate. If anything, Amazon probably has more leeway since the Estate is involved in the production of the show.
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You say this like it’s some sort of great, novel, and “correct” idea apparently without realizing that it’s deeply rooted in racist ideology.
White humans and black humans aren’t different subspecies. Biologically speaking we’re all part of the same race. The only reason we have these sorts of racial divisions are because a bunch of people hundreds of years ago decided that skin tone was (among other things) a good indication of superiority/inferiority and the trickle down effect of that still reverberates to this day. Variance in hair color and eye color are no different in a biological sense than skin color, but I highly doubt you’d split a group of white people into different races based on either of those factors because you just haven’t been conditioned to view them the same way.
What you’re essentially saying is that skin color alone makes someone SO different that the only way they could even fit into a fantasy setting is if they’re a completely separate and segregated group. It doesn’t even matter if this fantasy setting doesn’t share our actual history, the only way it seems to make sense to you is if our history of human prejudice is applied to it.