From what I see most people didn't like how stupid everything tried to come together and how unbelievable it wasI just looked at imdb and saw 8.6, then I looked at rotten tomatoes and saw an audience score of 4.4 stars with 91% liking it. Seems like most people think its a great film.
The only flaw that bothered me was its similarity to IV, everything else that people mention is being exaggerated or can be easily explained.