you realise that something's not just clickbait because you don't understand it? Huione is a behemoth in the laundering-sphere; it's intrinsically linked to Cambodian scam compounds, as well as handling every single step of the wash process in-house. These guys don't just receive the stolen funds, but they link international clients with mules across literally thousands of Telegram groups before converting said currency into the Hui-one coin and then onto Tether. All of this is done within Hui-one's infrastructure.
If you'd bothered to do just one iota of research into any of the topics covered in the article, you may have stumbled across chainanalysis' report on them from last year. Elliptic, also mentioned, have done comprehensive reports on them. Lazarus Group, who recently stole around a billion from Bybit, frequently move funds through these guys, so did Conti, and many of the other big cyber-threat groups.
To your point around it being a huge cost to the scammers, that's a given. Effective laundering is expensive because organised crime groups are most vulnerable at this particular stage of the fraud. A massive decentralised network of groups that can match criminals to a steady flow of international bank accounts that can handle fraudulent funds is pricless.