i don't think that you're truly judging a movie before it's seen if you're just judging the promotional pictures or trailers, it's only really if you say something like "this movie is gonna suck" after you've only checked out the promotional material
people are judging the appearance of sonic from the promotional picture, sure, but they're not actively stating that the movie is going to fail purely because of that picture
speculation of said product after viewing previews or promotional pictures is what i imagine people gravitate to most, but flat out stating "this movie is gonna suck because of the trailers/promotional picture" just isn't cricket baby
i'm a hypocrite, i judge movies based on promotional material