[downandout]

Sure, for something new or unfamiliar. But most astroturfing campaigns are not directed at such issues.

[moate]

Everything is new and unfamiliar to someone.

Also, pushing things further to the extremes/reinforcing the belief that "Everyone I speak to agrees with me on <topic> so I should therefor stand up for it because it's right" isn't less bad than fooling someone who hasn't yet formed their opinion.