This is a terrible low effort post. Anyone holding a large amount of crypto should have the majority of it in a cold wallet. It should take a significant amount of time to make that transfer because it should involve significant controls like multiple people travelling to a secure site.
An honest crypto exchange might see a "bit of a bank run" without raising any significant alarm.
Interesting that a bank run, (non-banks restoring theor fiscal custody of their own money, leaving the banking empty) is considered analogous to a weapon of mass destruction.
What's so taboo about everyone having their own money in hand?