The article has really no specifics - I wonder how badly they had to slant the research to get that attention-grabbing headline, and what the underlying research actually found. (Also? While we love to talk about AP has roots in the parenting practices of traditional hunter/gatherer foraging societies, we don't look at the way those people actually parent. Not all of it is as lovely as it sounds from here.)
I think major changes in social support for children and families would increase uptake of a lot of good things, but as long as parents are financially stressed, and there is no paid parental leave, parents will have to make economic choices that affect their children, like opting for formula instead of breast milk, or letting the baby cry because they have to sleep to be able to work.
Darcia Narvaez has a long history of being super judgey about modern parenting practices, without offering practical solutions or considering the challenges parents actually face. I'm not excited to see her doing it some more.