There is a point where I'd agree with this, but her shitty behavior definetly spoils the movie and even seeps into it. I can separate people like Roger Waters, the idiot, from his work in Pink Floyd, and even his more political music. What you can't separate however, is an obnoxious cunt acting like herself in a movie. And part of what pushes a movie are interviews and trailers too, so if they're shit, that can factor into your movie-going experience, and that is perfectly valid. If it was, by comparison, a movie about Ted Nugent and he suddenly started going into political rants about how superior he is or gun control while he's giving an interview, I could also see why people wouldn't like it.
Besides, that guy wasn't even replying to you. Why do you spring up so quickly to defend her, as if was a personal attack aimed at you?