[depr]

This is explained in the book:

“Successful branding stories are often characterized by disruption, which turns an established industry or experience upside down. The MBSR brand is one such disruptive force, with Kabat-Zinn’s talking points including pithy quips such as: “The Buddha wasn’t a Buddhist,” or Buddhists “don’t own mindfulness” because it is “an innate, universal human capacity.” Potential customers are thereby assured that MBSR is a non-religious product, yet still offers the best bits of what the Buddha taught. In Kabat-Zinn’s words, his version of mindfulness is “a place-holder for the entire dharma.”

The Western world has co-opted an aspect of Buddhism, which works to improve productivity, and discarded the part that doesn't fit its worldview; the other pillars of Buddhism. This enables it to be sold as non-religious.