People don't like remakes, even if it was only a "remake" for the first film and then went increasingly off the rails. Then they started disliking it because it wasn't the same as the series, because they can't make up their fucking minds.
People think it makes them look smart if they dislike anything popular.
People don't understand that NGE was supposed to be self-deprecating of the genre even from the very beginning, and has now turned to being self-deprecating of itself (building upon the implied looping nature of the series-End-Rebuild cycle), and so they think it's just Anno wanking himself off.
People don't understand that 3.0 was meant to be confusing and nonsensical, because YOU ARE SHINJI.