I had similar concerns, what new breed of superdocs are they hoping to create, considering that doctors before them certainly did have some level of meal preparation ability? But fortunately the article is more nuanced, i read it as "when general household skills are in decline, young doctors may be bottlenecked by that when talking about nutrition, some cooking classes might help".

I see that as a refreshing break from the usual pattern of naive "if there are numbers (no matter which) it must be true"-empirism that holds the medical profession in a stranglehold. (even the antiscientific alternative medicine people do most of their arguing by blowing numbers out of proportion, people rarely become doctors because they were particularly good at maths)