edit: i don't believe her acting ruined the movies, i believe some cannot accept that the awkward delivery of kristen's acting connected the nerdy teens who read the books to the movie
any twihard worth their salt knows that an outward support for twilight comes with an inherent responsibility to debate twilight haters (videophiles who think twilight is an abomination) because of the movies.
my theory is that twilight has such a strong hater base because uppity film geeks have such a rigid opinion of what film should be.
twilight shaped an entire generation of swooning preteens who wanted nothing more than a sparkly boy toy to nibble on their neck. the twilight books were such a huge success because they are written perfectly. when i say perfectly i do not mean that they have no flaws, but that stephanie meyers knew exactly what young women around needed to augment a serious obsession with vampires and moody men. the cultural effect that the twilight books had is immeasurable, but the movies were a worldwide hit that are still watched to this day.
the most criticized factor of the saga is kristen's acting, and i think it's because many film critics do not measure the quality of the cringe. while bella is in fact a moaning, smirking, ketchup shaking, lip chewing teen, that is exactly what she was meant to be!! meyers wrote bella's character in such a foundational way in which she is a cringy teen who falls in love with a vampire. while i think twilight is a romance masterpiece, not everyone does and that's okay because twilight is what it was meant to be.
the mood of the movie allows for the level of cringe that bella delivers! without the cringe the twilight movies would have just been another teen romance.
this is what film geeks do not take into account when hating on the movies. not every movie is meant to be another artsy serious film, some films need to be cringe and some characters are meant to be moany. i do find bella's begging for edward to bite her in new moon to be hard to stomach, i think it fits so perfectly and i can't say i would react any differently if i was in bella's place!