One thing I like about the Rings of Power is the discussion it has incited. There is a lot of debate going on whether the series is true to the source materials or are they taking too much liberties twisting the story to appeal to the wider audience.
There is a lot of details brought forth from the various writings by Tolkien to prove this or that. But the fact those stories are getting discussed is more important than the outcome of the debate. It also shows how vast of a background the word of Middle-Earth really is.
The fact that those stories exists (even if Amazon doesn't have rights to them) sets also an interesting preface for all the speculation around the storyline and characters. Even knowing all the characters and their histories the show still manages to retain some mystery around the characters and leaves room for guesswork about who's who.
The show might not hold true for the original stories. But the fact that there is all these discussions happening well make up the atrocities.