That guy was just angry that his mind moves about too much to ever derive any deep experience from Mindfulness Meditation. So it became important to turn his first love of gathering information into a holy act since he couldn't bring himself to an appreciable level of stillness. Not trying to come down on him in particular as I see myself coming from such a know-it-all mentality whenever I am mentally trying to conjure up a feeling of validity within my own conscious experience. Nevertheless, I have to agree with him in that Mindfulness Meditation is not the universal panacea. I would say that even the Awakened State that Mindfulness Meditation is pointing towards is not the universal panacea but the end of the need for one. I also agree that the Western Mystery Traditions offer a great bounty of understanding when it comes to learning about and deriving insight into the nature of Mind. For me the usefulness of the tool comes down to the skill of the artisan every time.