"In my personal experience, the more I learn and understand about Tibetan Buddhism, the more I see how shallow and superficial Ole Nydahl's Diamond Way teachings are. Truly it is Buddhism Light, or Coca Cola Buddhism, it really is Buddhism that's been watered down and westernized. One thing is the shallowness and superficial teachings, his hate-speech concerning Muslims is hardly compassionate or tolerant, it borders on outright racism.
As for the freewheeling, relaxed attitude towards sex observed at Diamond Way centers, it would be less disturbing if Ole Nydahl didn't exploit his lama status to frequently have sex with female students, something that went on even while his wife, the late Hannah Nydahl, was alive, and continues to this day.
I agree that Diamond Way is a cult built around Ole Nydahl's personality. Ole Nydahl haven't done the traditional 3 year retreat that other lamas go through, and after the death of HH the 16th Karmapa hasn't done any substantial studies. He simply does not have the same deep knowledge of the dharma that more qualified lamas have. Yes, he is higly praised by the 14th Sharmapa and Trinley Thaye Dorje, the less recognized of the two 17th Karmapa candidates, but it's a push-me-pull-you-setup. He backs them up in claiming that Trinley Thaye Dorje is the real 17th Karmapa, in return they assure everyone that he is fully qualified to bear the title of lama when no other lamas in their right mind would do the same.
Ole Nydahl compensates for his lacking knowledge of the dharma with his charisma and talk of his succes. When you go to a Diamond Way dharma talk with Ole, you will hear him talking alot about his successful work with setting up Diamond Way centers around the world. Time that could be spent talking about the dharma.
It is truly a shame that many Western people get introduced to Tibetan Buddhism by a teacher lacking deep knowledge of the dharma, a teacher so prejudiced and a teacher with extremely bad ethics when it comes to sexual teacher/student relationships."