He is clearly talking to people in Ruto's inner circle that are giving him this information, which means, if he has the info, then ruto knows it.
Not sure who these 4 dollar billionaire CS"s are but I'd venture to guess - Kibicho; Matiangi; Murathe; Jomo Gecaga? although he says they are CS's
Kenyans need to start paying attention to the amount of money that's being stolen because it's a large cause of their poverty and if it's allowed to continue, then why would anyone try to even work hard in that country? why create anything? just wait to steal.
Ahmednasir himself is questionable (since when does law pay that much and he's not quiet about how much money he has)