The concept of economic anger is interesting but we need some data to establish its existence. The article in The Walrus doesn't do this. It just mentions "economic anger" once. 
People should be angry that a decent and secure life is now available to only the top 20% or so of the population. That anger should drive them to become politically active. Instead, people live in denial, borrowing money to live the life that they think they deserve. Easy credit, easy bankruptcy, little consequence. Harsh lessons not learned. 
If writers want us to empathize with the plight of young modest-income people, they need to find us some examples of people diligently trying to live within their means. Stories like that of Kervin and Kyra are easily dismissed as entitlement and fecklessness.