I am not denying that the books didn’t sell extremely well. Which part did you miss where I said that I actually enjoyed the Twilight movies? This all goes back to a story generating a large fan base even when the writing wasn’t strong enough. I read somewhere that said the agent admitted that she had to polish the book tons.
And honestly look at the fan base for Twilight, teenagers. Or young adults and only a possible handful of a much older crowd. When Twilight came out, I was in my twenties, same for Harry Potter, early twenties.
Look the fan base for 50 Shades of Gray, groups that love erotica involving kinky sex. That’s why it sold, there are millions of kinky people out here, and that book proved that theory.