I think that's a fair point, although making him both black and having an affair with a human woman is a bit heavy-handed in terms of pushing a narrative.
But that's far from the worst thing in the show. The whole part about Galadriel essentially being exiled back to Valinor -- a very un-Tolkien concept itself -- and her leaping out of a boat right before it reaches Valinor (presumably), is just jaw-dropping.
You made a good observation that showing a black actor wooing a white actress probably makes the KKK and Nazi types very unhappy. I hadn’t thought of that.
Your other points are well taken as well. As I said on an earlier thread, the writing is lazy, dull, and unoriginal, with chunks of dialog both large and small lifted almost verbatim from other equally average productions. It is just dreadful.
So they can't control their sexual impulses even in middle earth, huh?
It figures.