The raid uncovered 3,642 rigs used to generate revenue and launder illicit funds through “clean” newly minted coins.
Baek said how syndicates “push dirty money into rigs,” and because the farms sit behind shell firms and nominee directors, investigators often struggle to tell which coins are legitimate and which are funded by scams.
Where does the laundering step take place? My understanding of money laundering comes from Breaking Bad: you pretend you have legitimate revenue sources that are hard to verfiy when you don't. This sounds more like they're using illicit funds to support a legitimate business. They're both attempts to obfuscate things but I don't know where the illicit funds get washed here.