I think unregulated in this case means crypto market in general is prone to pump and dump schemes and other market manipulation without legal repercussions
But if we look at other sorts of more complex financial instruments, the sort of thing that's inaccessible to an average citizen, then why are they protected by the state as well? The obvious answer would be "well, banks invest in complex financial instruments, and the state wants banks to be protected". But regulating financial instruments isn't necessarily the only way of ensuring that the banks' service to their customers remains stable, it's just one possible path.