The problem is that we seem to have entirely ignored the moral risk where some people (criminals in all but name) continually abuse the same issues. Companies intentionally go bankrupt with a ton of debt rather than trying to minimize debt when it implodes. I've seen companies buy big pieces of equipment just before bankruptcy and the machine (an excavator) was sold to pay general debts, only a small portion of which went to the seller. Management knew they were likely caput but they didn't act like it.
Mistakes can happen, but in this case it wasn't a mistake and it was incentivized - not just allowed - by our system.
If I borrowed your car and my garage burned down with it inside you wouldn't hold a grudge, but if I knowingly parked it in a burning garage you would.
Slower capital might mean more care and less fraud, but not implicitly. On the other hand, the velocity of capital through a system is at least one measure of its health and prosperity, and a system that deliberately tolerates a moderate amount of risk to min/max fraud/velocity is probably going to be healthier than one that errs too much on their side of either factor (at least in a very simplistic manner— of course there are many more factors and considerations as well)