I feel like her potentially not reading the book is not really relevant to whether she was sexually harassed. I completely agree. At the same time, I read the book, and I was extremely surprised by Blake Lively's interviews and the way that the film was marketed by her and the author, Colleen Hoover. The book is without a doubt about domestic violence. That is the whole reason for its existence. In my opinion, it is not a story about female empowerment, which is the way they spoke about it. In fact, the Lily character, for the vast majority of the book, doesn't really see herself as a victim of domestic violence and constantly makes excuses for her abuser's behavior. She also maintains a close relationship with Ryle well after the domestic violence. It is only toward the end when you can credibly say that there is any kind of female empowerment angle to the story. I'm being vague intentionally about what happens because I don't want to ruin the book for those who may still want to read it. The way the film was marketed, and I assume in Lively's edit as well, though I don't know that, very consciously and deliberately de-emphasized the whole purpose of the book, which was to examine the complexity of domestic violence, the cause and consequences of domestic violence, and its aftermath. In contrast, Justin Baldoni paid to option the book, and did center his promotion of the film on domestic violence, which indicates to me that he likely understood the story better and that he likely was motivated, at least in part, by wanting to bring awareness to that problem. Since that is also truer to the story of the book, this also indicates to me that his edit of the movie may have actually been better than Lively's from a quality perspective, though perhaps not as commercially successful, since that was the whole purpose for the story being written. So, it depends on how you measure success. If it's the quality of the movie, or its ability to do justice to its main theme, it's possible Blake Lively's edit may have resulted in a worse movie, but in a movie that made more money. I'm not sure you are definitively saying this, but I'm not sure that you can say that her edit is "better" because it made more money. Also, the IMDB rating for this movie is 6.4/10, which is not very high, which indicates to me that it wasn't beloved.
Also, Blake Lively's lawsuit focuses a lot on how her popularity declined, and that sales of her product declined, and is attributing that to Baldoni, but she did a variety of inappropriate things that did not make sense, such as promoting her hair care products and alcohol brand as part of her campaign for the movie. That is an extremely odd thing to do, very tone deaf, and really devalues the theme of the movie. There was no reason for her to tie her hair care brand and her own Blake-Lively alcohol brand to the movie as part of its promotion. They have nothing to do with each other, and in fact, alcohol is a huge contributor to sexual assault, rape, and likely also, domestic violence. I genuinely think that when people saw these types of things, in addition to the way she treated some of her interviewers, they just began to like her a lot less. For example, during her interview with one of the journalists that is named in the lawsuit, Blake Lively had announced recently that she was pregnant. So, the journalist, quite naturally, congratulates her on her pregnancy. A natural response would have been, "thank you. It's very exciting." Her response was "congrats on your bump as well". The interviewer was not pregnant. Another instance in the same interview is when the journalist remarked about how great the costumes looked in the movie, and asked her about the clothing. A natural response would be. "We do have amazing fashion in this movie. It was so fun to wear these clothes. I'm happy that you noticed, and I was actually very involved in choosing some of my clothing in the film as well. It was important for me to get Lily's look right", or something like that. Her response: This is paraphrased. "You know? This other male cast member had really nice clothing too. He had some amazing fashion, but he's never asked about that. It's just the women that are asked these questions. I wonder why." Again, this is a really ridiculous response that just makes her seem like she's not a very nice person, who seems very entitled, and who can be quite prone to twisting what people say to fit her own agenda. I think her own behavior, independent of anything that Baldoni may or may not have done, was primarily responsible for her decline in popularity. People saw these things, thought they were very odd, and liked her less as a result.