I think the point people are trying to make is that while revolutions
can be good, most of the time they
have been bad. Very bad. From the Reign of Terror, to the November Revolution, to Pinochet, to the Khmer Rouge, to Rwandans in central Africa, life has not been good for commoners during and after revolutions. (And I'm being kind by not listing the really bad ones.)
Add to all this the fact that they fail with alarming regularity, and America's collective lack of enthusiasm for that option is perfectly understandable. I mean, historically speaking, for the average person, revolutions either failed, and you were worse off. Or revolutions succeeded, and you were worse off.
It's so bad that, again, people are even a bit skeptical even of low risk options like tax reform and stronger unions. Right now, people seem to view anything that even appears to move away from the status quo as dangerous because of the admittedly horrid track record of revolutions, combined with the off the wall proclamations and actions of certain groups opposed to the élites. (Believe it or not, you don't allay peoples' fears of a reign of terror by shooting up churches and Walmarts for instance.)