Yup, deliverance is found through suffering is as much bull for revolution as its for art.
Sure you need to be familiar with injustice to make good revolution as you need to have spend time in the real world to make meaningfull art but there needs to be hope and room to be able to organize for progress. There is no such thing as "nothing to loose", people always have something to loose and unless under very extreme circumstances the hopeless can't afford to start the fight. They might lash out, they might riot but that's not yet the same as revolutionary action even though it can become that in time.
The mind is its own place, and in itself Can make a Heaven of Hell, a Hell of Heaven. What matter where, if I be still the same, And what I should be, all but less than he Whom thunder hath made greater?
Here at least We shall be free