Professor Harris-Lacewell - More votes for writing like this out there!
Also, here's an example of an intellectual who's located both in the academic and political realm.
There've been criticisms about "pop" academics who become mostly personality. They gain renown for exporting neatly-packaged ideas. Even more problematically, they have been criticized for gaining status of expert or "knowledge-generator" without anyone to challenge their expertise.
This last accusation is worrisome and might have a kernel of truth in it.