The whole in kind vs cash is a new concept to me since I don't follow ETFs in general. So does this mean that you can't go to them and exchange bitcoin for shares of the ETF? If someone were to want to do that? 

 Yap, gotta sell real corn for fake cash to buy fake corn 

 This probably is because of KYC. The government probably doesn't want no-KYC coins in the ETF for tracking purposes. I could be wrong. 

 I think that's a great read on the sitch