So, what is proposed? "Practically speaking", the authors write, "government might do well to maintain a more vigorous counter-disinformation establishment." (pg 19) They recommend that government officials respond "to more rather than fewer conspiracy theories [which] has a kind of synergy benefit: it reduces the legitimating effect of responding to any one of them, because it dilutes the contrast with unrebutted theories." (pgs 15, 29) Such advice assumes that all theories -- or aspects of a single theory -- are essentially equal in validity or lack of validity -- an odd position for legal minds supposedly sensitive to fine distinctions. But that would not matter when the point is simply to defeat citizen efforts.
More menacing, however is that the authors suggest "planting doubts [to] undermine the crippled epistemology [through] cognitive infiltration" of groups by governmental agents or by forces appointed by government. (pgs 3, 14, 15, 22, 29)"Government agents (and their allies)", they write, "might enter chat rooms, online social networks, or even real-space groups and attempt to undermine percolating conspiracy theories." In light of such proposals for dealing with citizens seeking truth, that Cass Sunstein is "one of America's leading constitutional scholars" (See above link to the White House announcement) is appalling.