The problem is the stupid bankrupt politics in the USA.
Social media is just gasoline being thrown onto the fire, with the billionaire class pumping as much gas into it as they can.
I think there's one throwaway paragraph in the middle of the whole article that addresses the political shift in the 90s that led us to where we are. That should have been front and center.
The USA needs universal health care, child care and college (and probably UBI) meanwhile the Democratic party has shifted to the right and fully engaged in punching left as hard as it can to avoid this happening, while losing elections to the right wing (which is on a slope towards outright fascism) because they can't deliver anything which significantly moves the needle for the average american. That is why the last 10 years have been particularly stupid. And the one thing that both sides pump up is the social wars and identity politics in order to avoid talking about the economic changes that have to happen.