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There's also the part of EMH where you can arbitrage superior knowledge. In the case of bitcoin, I'm essentially betting on my whole (minority) worldview being correct. I'm comfortable doing so, because it took a lot of study and reflection, that others haven't bothered to do, to arrive here. 100%
The last bit about EMH is critical, too. The flipside of inability to short certain assets (i.e., Shiller has made the case that property prices aren't incorporating all info since there are no good ways to short houses/put downward pressure on housing prices).