The sentiment is understood and obvious. The argument is elementary - absolutely everyone understands at some level that millennials can't afford to contribute to the economy with their McJobs and that they love living at home just as little as their parents do. But this whole "fuck you it's bullshit" mentality is so much less useful than "fuck you pay me." Nobody can do anything about "it's bullshit." "pay me" is an economic argument with numbers and shit.
What's the functional difference between fuck you it's bullshit and fuck you pay me? Yeah, it's an economic argument, but if individuals aren't faring that much better than they were since the recession, and with your above point on the three generations in the workforce, how is "fuck you, pay me" even supposed to work?
"Fuck you it's bullshit" - I have no specific arguments about the problem, only rage. "Fuck you pay me" - I have a very specific argument about the problem related directly to my lack of compensation for labor. The first argument is a denial of argument. The second is an appeal to economics.