Most spies in American intel history are motivated by either money, ideology, or to make their otherwise mundane life more interesting. For the money-motivated, many of those were deeply in debt or addicted to an expensive lifestyle. I wouldn't rule out an ideologue though. Polling shows support for Russia is in the single digits, but that means there's probably still plenty of people with TS clearances who at least disagree with how the US is handling things currently to some degree.

Sounds like these docs were high-level summaries or status updates though, which would probably be widely distributed. No doubt many analyst teams would be on a daily summary distro list.