[TMWNN]

Your citation says

>A new study from academic researchers found that 66.5 percent of all bankruptcies were tied to medical issues —either because of high costs for care or time out of work.

(My emphasis.) In other words, people going bankrupt because health problems = lack of work = lack of income. That does not contradict the fact that only 4% of US bankruptcies are because of medical bills (https://www.washingtonpost.com/blogs/post-partisan/wp/2018/0... that is, bills for health care treatment exceeding available income.

Your article goes on to quote a study author who carefully elides the difference between the two. Oh, by the way, he is a prominent proponent of Medicare for All! Imagine that.