I am going to go ahead and kick that dead horse that everyone is talking about. The Yoga Journal is a yoga flavored fashion magazine. It is equivalent to a beef flavored veggie burger. You get a hint of burger but it is really just mashed up beans and quinoa.
Their number one objective is to sell magazines. To do that, they show pictures of pretty girls and sell tons of ads filled with more pretty girls. To expect them to do anything else would be like expecting a cat to say moo.
If you really want to read about yoga, go buy a copy of the Yoga Sutras or the Gita.