Here is a somewhat controversial perspective that comes mainly from a writing standpoint:
She is of course right that this should ideally only be seen as her job (acting) and Star Wars fans that didn't like the new movies and blame actors for it are a bit dense and should leave them be, unfortunately fame always has these two sides to it. You will be adored if the story works and if it makes people happy. You become the face of something popular and you did a good job, but then after that it can becomes complicated. People attribute things to your persona from the characters they've seen on screen, then you make a new movie and someone else in your new project writes a story that becomes a problem for some fans*, although you did nothing wrong as an actor, they suddenly blame you or second hand blame the people behind you through you. It's not fair but I don't see how this will change ever, many people don't think things through when it comes to movies/celebrities in general.
If you want to dive a little deeper into this topic and where the negativity in such situations originates from then you need to know about the power of story and how it can affect people the wrong way when they are disappointed by story. It's quite interesting but at the same time depressing, in short, you create something people love by creating characters that feel real and make simple but powerful statements that people identify with. These characters will be icons to these fans. If you're not careful with how you further develop these beloved characters then you can indirectly make fans feel betrayed, they actually feel backstabbed and this can get very ugly, you never ever did anything to these people in person, yet you deeply hurt them. It doesn't happen often, is actually very rare but the most popular things (which Star Wars still belongs to) are examples of this.
You can compare this to expectations not being met but what sounds so simple and negligible takes on another meaning when that expectation was the love of your closest relatives to you. It becomes serious business! If that sounds ridiculous then that's because it is, it's nevertheless the case with fictional characters.
*problem for some fans in this context means the above, you created a situation where people felt betrayed. As a creator and IP owner It was your right to this, you can go into any direction you want. If you completely disregard your fans tho you run the risk of creating this situation and there is really nothing you can do about it to soften the blow.
It's the real life version of Stephen Kings Misery, Annie Wilkes the grade A psycho, but she is also your greatest fan and loves your characters. The psycho comes out when you betray her trust in the characters she loves.
When that happens with books in reality, people usually just drop the book because they are angry and then never speak about it again.
Extremely popular movies are a different beast and social media has it's usual unwanted effects on top. More people, more trouble!
People didn't like (hated) the childish humor in The Phantom Menace, the face of that humor was Jar Jar Binks, for them, he ruined Star Wars.
People loved Darth Vader, the small kid that destroyed Star Destroyers on accident and had Jar Jar Binks in tow was an imposter to them.
The actors have become targets for something that was never in their own power to change, they just did their best at what they were hired to do.
My personal opinion is that you can't get rid of this mechanic as the feeling of betrayal is a real thing in those people which then leads to bad behaviour around them, the only control you have on this is being careful with how you handle the writing of such characters! You do not owe your fans anything, but that doesn't mean that it is impossible to not have this happen and you are powerless against it.
