I'd like to add my two cents here.
Having completed now a total of four courses I can say that I've never heard any of my coursemates say a bad word against it. One said it was a little overwhelming. Thats it.
(She is always bubbly when we speak too.)
It was my first real introduction to meditation.
I've no doubt that some teachers can be a little over-arching but that is
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"Cults," Sects, and "New Religious Movements"