Why would the Winklevoss be selling their shares (granted, to other investors) if they're still "very bullish" on bitcoin? Wouldn't it obviously be in their interest to purchase more bitcoin for any other investors in the fund, since that would just drive the price up further anyway?
I have a better question. Why do dozens of people on this forum who have never had any direct interaction with an ETF and no direct knowledge on the underlining motivations for starting and running one, have a fracking opinion they think is worth sharing on this forum?

ETF = good for valuation of bitcoin. That is all anyone needs to know. So much freaking hot air in here. LOL