I skimmed the article and didn't see her blaming society, but maybe she was.
I think this is a wonderful story. I love it when people make the effort to improve their lives. That takes a lot of willpower and courage to start from such a fitness "hole".
She's massively fat and out of shape, so why would you expect to be "impressed" with her workout. She's doing what she can and it sounds like she's make huge improvements from where she was.
I hope she realizes that health is at least 75% diet. She got the way she was due primarily to diet. If you just live a normal life, walk around, do chores and such but don't exercise and eat a very clean diet your weight will naturally be pretty close to where it should be. You won't be fit or strong, but you won't be massively unhealthy.
Lastly, I will say that people should [a] acknowledge that being fat is not a good thing and should be avoided and not accepted; while at the same time, not feel like a horrible human being just because they are fat. There are worse things. Your identity as a person can't come from fitness levels.