[j42]

I think he's criticizing the cultural caricature that accompanies any activity becoming mainstream... but perhaps misdirected as the context in which one finds value isn't really important in contrast to value itself. Perhaps the elegance is in how deeply individual a practice it can be (turning the locus of one's awareness inward).

And to the OP, isn't it great that yoga can hold so much value through both a spiritual and physical lens? I think the mental and spiritual component has a lot to offer, but it's hard to claim that someone pursuing a positive activity, regardless of motivation is a bad thing.