Yes, it is unreasonable to cast judgment on something you have no knowledge of. You may cast judgment on the trailer if you like, since you've seen that, but no

Yes, it is unreasonable to cast judgment on something you have no knowledge of. You may cast judgment on the trailer if you like, since you've seen that, but not the film, which you haven't seen. I don't find this complicated, having seen many trailers that don't accurately portray the films they're advertising, just as I've seen many books that shouldn't be judged by their covers.