AFAIK,Elon Musk said that Bitcoin is "Brilliant,but not for Tesla" back in February 2019.Does this make him a Bitcoin enthusiast?Real Bitcoin enthusiasts actually want to buy and HODL Bitcoin.They aren't simply talking about how awesome Bitcoin is,while taking no action.
To be completely fair, you could be the most bullish person on bitcoin ever, but still not buy bitcoin on Tesla's balance sheet. It might just simply be the case that it doesn't make sense for him to have bitcoin on Tesla's balance sheet, and that's completely fine; because mega growth companies like Tesla should be focused on business acquisitions and using their cash to grow the business.