The fifth episode introduced a new concept: the idea that Elves need mithril (discovered by Dwarves) to repel the corruption that is slowly making them fade away.
Tolkien would be horrified by this mortification of his legends. I, as a member of the audience, am disgusted by the use of a plot device so stereotyped and insipid. But the worst of The Rings of Power is the lack of pace and the lack of soul. Yes, we are, more or less, in the world Tolkien imagines. Nevertheless, there's nothing of Tolkien's magic in this boring series. And, when it tries to be solemn, it's dull.