While uncommon, this happens from time to time when a lot of people try to withdraw money from a bank: in times of crises, when there are rumours of troubles at a bank etc.

And no, not even banks have that kind of money backed up by real assets (that's why there's usually a government-mandated minimum insurance on all deposits).

And you want me to believe that some scammers with no accountability have 11 billion dollars in assets backing up their claims? Just because they have the magical word "crypto"?