“Not your keys, not your crypto” is one of the most out of touch axioms in the crypto space (and that’s really saying something).
See: the vast majority of the population (even within crypto) that can’t figure out how to setup a wallet in the first place. Then, if you get that far, you can join the hordes of people that lose access to it, dig through garbage dumps for a laptop, have malware that inspects the clipboard and replaces addresses, make a wrong click in Metamask and get cleaned out, etc, etc, etc.
2) They're ridiculously complicated and convoluted. The fact they're suggested by the crypto community only further demonstrates my point about the crypto ecosystem being completely disconnected from reality.
3) They don't do anything to address the other issues I raised.
See: the vast majority of the population (even within crypto) that can’t figure out how to setup a wallet in the first place. Then, if you get that far, you can join the hordes of people that lose access to it, dig through garbage dumps for a laptop, have malware that inspects the clipboard and replaces addresses, make a wrong click in Metamask and get cleaned out, etc, etc, etc.