Finally caught up to the series last weekend. Just wanted to be the umpteenth person to throw his two cents in. While I don't think it's as bad as some people are saying, I can also relate with why some people hate it so much.
I'll start with the things I don't like in no particular order
1) The main character, Galadriel, is written to be like an asshole. You cannot relate to her at all. Instead, you become disappointed at the petty stuff she says and does.
2) As a matter of fact, there aren't many likeable characters at all. I think the closest would be Elendil or Nori's friend
3) Lazy storytelling. It's obvious the writers don't give a damn about LOTR. They're not bothered to follow the damn lore and they wouldn't think twice to contrive and force situations and chars to fit with their narrative. No matter how lazy or absurd it is. Case in point, Galadriel swimming across the goddamn ocean. Across the OCEAN. And then somehow bump into the right people while swimming across the ocean, not once, but TWICE. Or how Queen Regent doesn't trust Galadriel so instead of sending Galadriel away asap, she forces Galadriel to stay on the island. Why? Because they writers needed an excuse for them to stay but couldn't be arsed to come up with a better reason.
4) The dialogue is atrocious. That bit about the boat/rock. And then "the sea is always right", "you've NOT seen what I've seen", etc. They try so desperately to be hoity toity and deep. But they failed miserably. All sorts of cringe. With the billions they spent on this show, you'd think they could afford a few million for a literature professor to proof read the damn thing and at least use the right words/phrasing and make the dialogue flow more naturally.
5) Their warg looks like a goddamn chihuahua drank the mutagen from TMNT. Seriously. A billion dollars. For this, folks.
Which is a shame, because there are things to like about it
1) Most of the visuals are good for a tv show
2) The premise is interesting. If they make full use of the potential, I think the show could be good. E.g. Already, there are some potential set pieces they could use with the current premise they have setup. They could write Galadriel blinded by vengeance and causing harm to the people around her. She realises, she is following the bloody path of Feanor and gradually changes her ways to become the Galadriel we all know and love. Another potential set piece is how Harland follows the Aragorn arc and ultimately fails. Complete with emotional attachment from Galadriel blaming herself to sell it. Right now, 3 eps in, kinda hard to tell, although things don't look good. I'm skeptical cause the way they wrote her. She always has to be right. Why? Because reasons.
As of right now, I think the series is a 5/6 out of 10. I've seen worse.
As for all the online rage about the changes, I'm very pragmatic regarding this. Ideally, you should follow the lore. Else, please call it something else. Not LOTR.
However, if you don't follow the lore but you do a damn good job of telling a damn good story, no one is going to complain. Right now, they're doing a poor job of it, so people are complaining. How long this continues, will depend on whether they can turn around the story over the next few episodes.
As for the future, here are some of my predictions
1) Halbrand turns out not to be Sauron.
2) Theo turns out to be Harland's son.
3) Harland or Theo becomes the Witch King of Angmar.
4) Adar isn't Sauron.
5) Sauron won't appear until later. Maybe end of the season or next season.
6) Sauron will be a white guy with blonde hair and blue eyes and dressed in white.
7) The stranger turns out to be Gandalf. Too on the nose? Timeline not in sync? feck it. Writers lack depth and they don't care.