Why don't you address any counterfactuals that don't fit your theory?
My point is that what we are witnessing here is better explained by the sudden access to social media rather than socioeconomic deterioration. By the way, we agree that the working class in the US (and UK) have also experienced a relative decline in the past decades.
No, the left-most party in systems that were right – center or right – center-left getting fully on-board with neoliberalism happened with Blair and Clinton, but neoliberalism dominated the same states from at least Thatcher and Reagan, respectively.