From the article:
> "I spent my last day in Los Angeles riding on a Segway, buying legal marijuana and staring at some turtles in an on-campus pond at UCLA. I was unsettled yet intrigued by Britton’s message. Some of the adverse experiences she had described were similar to challenges I had faced. But, at this point I was a decade into my intensive mindfulness meditation practice. I was too deep to get out. "
There's just so many things that is bad with this new-new age wave.
First of all, doing spiritual practices generally do not go hand-in-hand with taking drugs. Just taking marijuana or hash may bring panic attacks, and even psychotic episodes. If you rely on drugs to keep your emotions in check, you're already dealing with them wrong. Meditation together with drugs won't help that, but may worsen things if done intensively.
Second, there's no such thing as "intensive mindfulness meditation practice". Mindfulness is gentle and short, and more about stillness than meditation.
Third, "intensive meditation" is something everybody should be wary about. Max 20 minutes is recommended per day, and there is no need to do more in order to "get anywhere faster". Most important of all, do it with an experienced teacher you trust. The most important ingredient in meditation is to let go and relax, and is not yet another "work".
In the end, something can always go wrong. Not everyone can deal with meditation, and not sure if there's a way to ensure to filter out people. Often people come to classes because they have some issues, not when everything's alright. So there are already things to deal with. Recommended is that people doing medication like antipsychotics, should be prescreened from joining class.
In the end, meditation is a powerful tool. But not sure the stress of Western life is the right way to channel the clarity and calmess one may get from it. You may come back from long retreats, but need tools to deal with the stresses in modern day life. So just meditation may be too confusing or not enough, to deal with one's life once more.