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Possible. However it is also possible that saying that would lead to less clicks on his instagram's donate link.

IMO there's a decent probability that's the reason... The treatments cost an arm, a leg, and one kidney.

Only via the licensed path. The amount of ketamine his blog post talks about him receiving actually costs less than $100.

Assuming he wasn't being dishonest in the discussion of his current financial state, this angle seems off the mark.