If you don't think that CAM is the enemy of science in medicine, then you don't understand CAM and its proponents. Don't be fooled by their marketing. They want a return to the pre-scientific days when health gurus could sell any snake oil they want at exorbitant prices, with any hyped claims that they want, without going through all that tedious science.
Existing research has not yet clearly defined what mindfulness is and what effect it has. The hype clearly has gone beyond the science, and more rigorous research is needed to determine what specific effects there are, if any.
Retractions of scientific studies do not always mean that the studies die a deserved death. Sometimes they live on as zombie studies, continuing to be cited by other researchers and having an effect on the scientific discussion. We can fix this.