Someone didn’t read the entire link they posted lol. There’s a whole section talking about the unusual link to poverty, starvation, and obesity in the US. Both is happening simultaneously.

“Thus, in many poverty-dense regions, people are in hunger and unable to access affordable healthy food, even when funds avail. The double-edged sword of hunger and poor availability of healthy food is, however, unlikely to be the only reason as to why obesity tracks with poverty.”