Writing this review after watching it two times. (Spoilers)
The first time I watched this movie, I watched it with my sister (she hasn't read the books) and when I asked her at the end how it was, she said that she didn't understand half of the stuff. She said that it's just a good time passer, but not memorable and touching in anyway. And that's what I felt too. The movie isn't downright bad (at least for me), there were a lot of good aspects to it, but still a lot of factors managed to pull it down.
Pros:
1. The background score was good, it managed to capture the emotions and themes of the movie, and I felt that it was one of the best aspects in this movie.
2. The casting.
3. The CGI, all the camera and visual effects were amazing which was expected from a Disney movie.
4. There were some scenes they took from the book and did it well. The furniture scene and the "goblin and Mulch intro" scene were good.
5. There were some scenes they added that were good. I liked the wedding scene, it was brilliantly implemented. The whole interaction between Root and Mulch was good.
6. There were comical as well as emotional scenes in the movie, so they did a great job balancing it out.
7. Used two D'arvits.
Cons:
1. The movie has a worse and unnecessary plotline, especially the whole fathers plot. The book had a really good story, and all they needed to do was just copy it with a few twists on their own.
2. The movie doesn't have a good pacing and no sense of direction. The relationship between Artemis and Holly has no real development and they became friends really fast.
3. The story and direction of this movie has obvious faults. Many of the stuff were unclear to me and I had to watch it twice to understand it all properly.
4. The story. I should say it again. The whole Artemis Sr and Beechwood plot was unnecessary. If they removed it (Colin Farell did a great job) the movie had a chance.
5. Many of the characters were unused. Especially Butler (who was just present for fighting /comic relief) and Juliet Butler(way unused) . And then there's no Angeline Fowl whose name isn't even specified in the movie(she's said to be dead).
6. Bringing Opal Koboi so early into the game. This is enough to annoy fans.
7. They tried to merge the first two movies into one(and had a really short running time), but did a poor job executing it.
8. They didn't mention the Fairy book, which is clearly needed to explain all the fairy rules. Instead, they took an Aculos and The Irish Blessing and wrote the entire plot based on that. Rewrite was the worst thing that happened to this film.
I felt that disney made a wise move by introducing this to Disney+ instead of taking it to theatres, because it would have been a failure and would have received a lot of backlash.
Overall, I wouldn't say it's an extremely bad movie(because I've seen Percy Jackson, and unlike Percy Jackson, Artemis Fowl didn't disrespect the books), nor a good movie (obviously). But there are certain aspects in it that give me hope. I can understand why a lot hate it, because it crused all the hopes and wishes of fans. Will I watch it again? Maybe, yes. But not as an Artemis Fowl movie. Just as an independent movie.