I don't think there is anything wrong with not revealing information about yourself to millions of people online, and she has her right to her opinions, hence "speaking for herself"
Let me explain what I'm talking about: Grace Randolph said that Into the Woods 'underperformed' and she didn't give too much detail as to why (on video). She explained in the comments section that after Chicago, a Rob Marshall film musical should've faired much better at the box office. That's what I meant about the fact that she speaks way too much for herself as if she was the head of Disney.
But guess what? She's not! Many people considered Into the Woods to be a success, it even holds the record for the biggest opening of any big screen adaptation of a Broadway show. The most anyone should really be happy about was that the movie was A success overall.
I even remember Steven Spielberg once explaining in an interview that you should never count on your movie to be a big hit (unless of course it's a sequel).