> High-status people are more preoccupied with how others view them. Which means that educated and/or affluent people may be especially prone to peripheral, as opposed to central, methods of persuasion.
There is a hidden assumtion in the above part. Did you spot it?
It is that educated people are also high status people, are also (overly) concerned about their reputation.
If this assumptions breaks, all the following about perpetuated ideology stands on a weak basis. After all, more educated people could tend to be more rational too.
To be fair, i would my left leaning ideology be based more on reason and not on my educational sociotope. May be just my bias.