Yes, but the parent's point (and my concern as well) is that "market crash" does not necessarily mean widespread fallout (e.g. Black Monday in '87); that only happens when the losers are tightly coupled to other critical parts of the economy, which isn't necessarily the case here: GS/JP Morgan won't have to default on loans to critical counterparties in a crypto crash, for example.

Any time a big group loses wealth all at once, there's some consequence, but that's not the same as "systemic risk" where it causes catastrophe in areas not directly related.