It’s kind of a fun story but it doesn’t make sense. Was that the only data in a data center in the world that’s not backed up elsewhere? Did I miss that part?
Nope. THe story doesn't make any sense at all.
They stole about 5 milion dollars worth of computer equipment, which depending on how it's purchased is either a single cabinet of storage or a few cabinets of compute, which is largely worthless on the resale market, or if you believe the criminals, they were stealing evidence of illegal activities of the "bankers".
The story is way too sexed up and hollywood'd
Your confusion doesn't make any sense. The point was to steal a copy of the data, not prevent the original owners from having the data any more.