I don't think it exonerates her, whether or not it was written by her, or "evidence" of Balwani's "controlling ways". I think it absolutely portrays her a way in which she wanted to be portrayed for the longest time - ultra motivated, high energy, visionary, driven. I don't necessarily think there's anything inherently wrong in calling it out as looking far more like "the notepad of someone who _wants_ to be thought of in all those ways", as much as the reality. And I say that as someone who is chronically trying to "organize" my life, and getting tripped up on the investments to that end, rather than "putting in the work".
Edit: also, she doesn't get to control the narrative. "Here's evidence of how I lived my life, but you don't get to look at it or talk about it in ways other than I intended" and we are not obligated to stick to the "approved narrative".
There's very little "mean gossip" about it.