It refers to a study from 2014. Not very recent I would say.

This is a well-known "inconvenient result" in science: full fat ice cream is the healthiest dairy product. Scientists therefore usually stop at "dairy is healthy" to avoid ridicule.

The article below even mentions a trick used in OP's article, where scientists substitute yogurt, because saying yogurt (not as tasty!) is healthy is apparently less heretical to those lingering Protestant sensibilities.

https://www.theatlantic.com/magazine/archive/2023/05/ice-cre...