if somehow the coins in the etf disappear (which seems extremely improbable) Why ? many people have lost crypto due to such fraud ! The ETF has to first convert real money in to Crypto via some exchange would they not? and what if after doing that the exchanges goes belly up? so the ETF may not have bad intentions but the unregulated exchanges of this funny money might!
No. The etf might buy the bitcoin in an exchange, but it doesn’t hold it on an exchange. Aka if the exchange goes bankrupt it doesn’t lose all the coins.