I do think a conversation should be had about how corporations and politics are working together to systematically make the working poor continue to be a reality, but the definition of "paycheck to paycheck" is fairly broad. Does it mean if you don't get paid on the 30th you're on the street? Or is it that you're just working to live?
If it's the second option then that's probably a reality for most people since there aren't too many ways to freely not work and still have financial independence. Most people I'd think are part of that category but wouldn't be on the street if they missed a paycheck.
I think it's more the first
A $500 surprise expense would put most Americans into debt
Basically means no savings whatsoever so one missed paycheck would put a person into debt