Good post and it is interesting to note HHDL's policy towards the Bon religion. Bon is essentially an ancient religion based on animist-shamanist beliefs, with exorcisms, talismans, spells, incantations, sacrifices, rituals, a pantheon gods and evil spirits.
The religion arises as the result of pre-Buddhism Tibetan people's fears and suspiciousness, and hope towards objects found in nature and begin to worship them. In principle belief in Bon is that everything has a spirit in it and so they worshipped the heaven, the earth, the sun, the moon, mountains, rivers, thunder, lightning, hail, fog, and even animals.
While there are quite a bit of common ground that Bon shares with Buddhism, there are principle differences. Spirit worship is at the heart of Bon and in the past Bon practice also involved some animal sacrifice, the very act of which is clearly anti-Buddhist and yet this does not pose a problem for the Dalai Lama (who claimed that Dorje Shugden not be worshipped as he is merely a spirit) or the CTA. In fact, within the CTA there are 2 official representatives from the Bon religion.
This openness by the Dalai Lama to Bon, a sectarian religion has ironically not being extended to the practice of Dorje Shugden, the practitioners of whom are pure Buddhists in the tradition of Je Tsongkhapa. Dorje Shugden has been clearly recognized to be the emanation of Manjushri, the Buddha of Wisdom.
This is yet another example of the idiotic discrepancies in the CTA's stance towards other religions and beliefs and the inconsistency in the basis of the Dalai Lama's policy towards Shugden practitioners.