I think first we'd need a means of identifying such. Would you say people who are more closely wedded to tradition and traditional roles are more likely to have thought terminating cliches as their crutch against cognitive dissonance? Or would you say that those unable to fit into their own societies, who rebel and find themselves on the outside looking in are more likely to need such crutches? When we say "cognitive dissonance" are we talking about those who are comfortable in their social milieu or those who are not? Do thought terminating cliches represent people who are adjusted to their social milieu or do they represent those who need excuses for not fitting in?