It's a valid opinion if I see a picture of an actress in her underwear (apparently that's Carol Marcus?) and my first reaction is that she needs to eat a sandwich (seriously, she looks like a toothpick).
I don't need to see the movie to have a negative reaction to a picture.
The story is a different matter. I should see the movie before saying that it's 100% crap. It might only be 99% crap. Who knows - maybe I'll find that elusive 1% (or more).
But I HAVE seen the 2009 movie, and I stand by my opinions of it.