Earlier quoted context omitted.
I had a hard time with this article. The pool the subjects were pulled from is suspect to me. They also didn’t interview any Rabbis, Priests, Mullahs,…. They study spirituality of a small subset of people pursuing it.
Mindfulness as practiced by the typical western audience (largely secular, young professionals) is well represented. If you want to take something else away or are looking for alternative discussions about the nature of spirituality itself: go ahead, but that's not the study for that. Only mindfulness meditation as practiced in western society in the fashionable way.
Mindfulnesss practiced in a fashionable way seems like the bottom of the barrel of mindfulness.
Maybe I did read the article with the wrong point of view. I thought it was posted to support the notion that Mindfulness is flawed.