Even in the description it doesn't say what these people were doing. You can clearly see they had multiple phones and had a Visa site on one of the computers. Were they Bitcoin dealers? I thought trading was allowed in Russia... Maybe they were laundering money?
They earned the trade of crypto currencies on the exchange. In order not to attract attention they were making a lot of Bank cards for different people and cashed them using crypto currency. We are talking about a total of about $ 9 million. Now they are accused of illegal banking activities. Stupid country and stupid laws.
If I understand correctly, they were trying to hide their income from trading by dividing it into multiple accounts and withdrawing via ATMs in cash. This had to be done to avoid paying taxes, so the country isn't stupid.
IMO the banks got them because even though they had a few different accounts the transfers were most likely coming from just 1 or 2 exchanges and they were withdrawing in the same town. I don't believe they were smart enough to have the accounts stand on people from different parts of the country and going there to withdraw.
