the best description of Corbynism I’ve encountered 

From John Harris in the Guardian:

Whatever his suitability for the job, Corbyn is where he is for one reason above all others: the fact that Britain’s post-1979 journey into a new reality of a shrunken welfare state, marketised public services, rising inequality and an impossible job market had reached a watershed with the deepening of austerity, and there was a need for a clear moral response, without which Labour was in danger of shrinking into meaninglessness.