I really enjoyed this movie. Classic Terry Gilliam in scope and concept. I think the people who were confused, are probably unfamiliar with the story of Don Quixote. Make sure you read the book or see one of the earlier Don Quixote movies, before you see this. It makes perfect sense if you have some familiarity.
The movie is so scenic, and the actors are all just wonderful. Even Rosinante is perfect!
So nice to see Adam Driver in his role. I like him. I had only seen him before as Kylo Ren, and as a Star Wars fan, I pretty much hate that character.