I'm surprised Saylor went there. If you don't know where the yield is coming from, you're probably the yield.

I see no reason why a bank would pay you a yield to hold your Bitcoin unless they then exposed it to risk. I bought Bitcoin to escape that third party risk.

Using Bitcoin as collateral for a fiat loan is different. You're paying a yield to them for acquiring fiat that they created out of thin air. It's not exactly ethical but it's beneficial for both the lender & borrower. I'm surprised he didn't bring that up because he has in the past.