Yes, finally they have someone with an actual West Mids accent in a Tolkien thing and they make him speak Oirish (to appeal to the US audience, no doubt).
"The Fall of Numenor" has just been published, which puts all the JRRT Second Age stuff in one place - and right there, they'd have had source material to use, (all of it previously in print just spread over different books), to compile something that was at least in line with Tolkien.
Got to the end of this and have since completed my xmas annual re-watch of LOTR and so have thought a bit more about this. Rings of Power has one very central problem - the mis-casting of Galadriel. So unlikeable, nothing to identify with there, an utter void of personality with a face like a slapped arse the entire way through. Replace her for series 2, or the thing will fail further.
I read that the producers/show runners and writers were immersed in Tolkien lore but - clearly not. The thing also flopped because it was up against The House of the Dragon which was good, and also benefited from some solid central performances (Matt Smith in particular). I hated the soap opera BS trailers for RoP as well ("Who is Sauron?") I pretty well didn't care who the feck was Sauron by the end or whether the strangely unlikeable naked bloke who dropped in on the hobbits was Gandalf, a random blue wizard, or Radaghast (or Sauron).
Didn't know who half the characters were, and I cared half as much as I should've done about the other half - to paraphrase Bilbo.