And if the system works sans-ethics, is that a problem beyond moralistic gatekeeping?
Since the main objection in the article was the military coopting the practice - The basic tenants of mindfulness, as I understand them, are not anybody's property - no matter how compelling the publisher's advances are.
And let's be honest with ourselves - the stationary and toilet paper the military buy have the implicit eventual aim of making them better at making things dead. I'm not convinced mindfulness training for troops is the problem here.
Sure, there are rogue teachers, but that has applied to everything from spurious gurus through to homebrew religions. At trial of sounding callous, caveat emptor surely?
Nothing Mindfulness (as a brand) teaches is a super-secret arcane mystery fercryinoutloud! If nothing else, the government spending time and money on it can only do wonders to validate it and cement it in the public conscious.