"I'm certain the poll-directed insiders are sure things will default to policy as soon as the conventions are over, but I think not. And as I've mentioned, we've all been quite content to demean government, drop civics and in general conspire to produce an unaware and compliant citizenry. The unawareness remains strong but compliance is obviously fading rapidly. This problem demands some serious, serious thinking - and not just poll driven, demographically-inspired messaging."
To unpack that (along with context from the rest of the email), Podesta's correspondent is bemoaning the fact that politics has begun to be covered as entertainment and celebrity gossip. He suggests that any hope that things will take a turn for the better after the election is misplaced, and that there's a larger issue: "we"—and by this he clearly means media elites, people in public office, and in general the milieu to which he belongs rather than some shadowy cabal of which he is a member—have not upheld their duty to help keep an informed and skeptical citizenry. He suggests that misguided attempts by the media to keep people compliant and docile have started to wear thin, but that in the absence of information and understanding all that anger is liable to attach itself to a demagogue like Donald Trump.
In short, he is advocating the exact thing mentioned in the article: informed civic and political participation! This is a perfectly anodyne line of thinking, and I don't really see what cause is served by stealing and leaking this person's private correspondence. And who is this dark and Machiavellian correspondent? This guy: https://en.wikipedia.org/wiki/Bill_Ivey