The interesting ETF will be for Ethereum because a custodian can possibly stake it and earn yield. ETH can earn within the basic protocol.
Nothing you listed applies to bitcoin besides remote theft. The whole point of a blockchain is be fault tolerant in the face of those real failures. Remote theft occurs from a failure to secure your private keys. That’s human error and will be resolved in the same way as gold with… custodians aka a bank.
https://www.businessinsider.com/jpmorgans-nickel-bags-turned...
Also, securing physical assets is much easier than securing digital assets.
Gold is hard to transport, easy to confiscate and hard to divide, thus difficult to use as a currency. None of those apply to Bitcoin. Well, unless someone is dumb enough to leave his money on an exchange.