You'd think he might have more value as a turned cyber asset than indicted? Perhaps a DoJ stake in the ground to encourage others to recant when they find themselves in EU territory avoiding Russian cruise missiles ?
From my time with game modding and cheat development communities, there's some subset that is hyperfocused on money and develops a lack of morals. Some of them eventually get into CC fraud, malware, and other cybercrime for profit. A lot of them never get arrested. At best they're just insufferable assholes, but generally they're not the type of person that is a reliable worker. Basically the same reason you don't want to press a prisoner into military service.