Hey friend, I think we dont should worry about ETFs, because Bitcoin will still be able to get the green light without ETFs, so don't worry about that, and we don't have to buy ETFs with bitcoin, let's see in the years 2017 ago bitcoin reached its peak without help from ETFs,
my point is: Buying an ETF WITH bitcoin and NOT with Fiat money. Current state is that I have to change my btc into fiat to buy an ETF 