I believe it was in Difference & Repetition that Deleuze specified that the foundation of any system of exchange was not exchange at all, but theft and gift. This fits into his broader argument in that text regarding the derivative nature of systems of equivalence and representation. Those are deep waters, beyond the scope of a blog to plumb, but I want to focus on that bit about theft and gift in regards to a discussion of spiritual syncretism and appropriation.
When folks start talking about getting back to ‘tradition,’ their is often a counter-cultural element at play. They are often defining tradition in counterpoint to ‘this modern life.’ There are reasons to be a little cautious of such gestures since they can become more protest than viable alternative, but there is something to this approach. The more we look at modernity, the more exceptional it seems.