I have recently come across this article and am happy to share it with you.
Social media have encouraged narcissism to reach mass pathological levels and, the article suggests, are driving the definition of “yoga” more and more towards fancy postures. What i'd call 'yoga porn'.
Teachers playing to the social media audience and posting themselves in the most difficult “asana” in exotic locations, wearing skimpy top-of-the-brand yoga gear often make yoga students feel inadequate and oh so far away from ever attaining the picture perfect pose.
Flaunting contributes to the thinking that advanced poses equal advanced practice, which is clearly not the case. If anything is shows that the selfie addict hasn't learned to keep her/his ego in check. Focusing on asana, one limb of yoga, to the detriment of the other 7, can hardly be considered an advanced yoga practice.
What do you think? What is your idea of a good yoga teacher?