But wouldn't those who boycott Twilight due to violence against women potentially also say and try to convince others that it's not worth watching as part of their boycott?
It wouldn't work very well to say, "Don't see it because it promotes violence against women... however... it is AWESOME!"
When you could say, "Don't see it because it promotes violence against women. And don't worry on missing out on anything cool, because it is TEH SUCK!"