I see it as a rather biased and unhelpful article. The author makes the strong claim that "mindsets are not free-floating" because they are shaped too strongly

I see it as a rather biased and unhelpful article. The author makes the strong claim that "mindsets are not free-floating" because they are shaped too strongly by a person's external social environment and circumstances. While this is largely true, it is false and harmful in its absoluteness. Interventions into thinking patterns such as CBT work and are effective. They may be less effective if the person has truly terrible circumstances, but poo pooing stuff that actually works just so she can advance her luxury beliefs is not good. People trapped in poverty need these cognitive tools more than anyone given how desperate their situation is. Poverty is every bit as traumatizing and difficult and impossible as she says it is, and such tools can help them avoid getting their spirit crushed under that hardship. I think that she's doing this because she feels that the narrative that poor people can simply change their mindset and become middle class to be undermining political momentum towards helping them. She may be right about that, but that is no reason to throw away a practically helpful intervention that can help these people in the meantime.