Earlier quoted context omitted.
That tax withholding is the only way that many Americans manage to save speaks more to a lack of self-control than anything else. If Uncle Sam can save a lump-sum for you by deducting from your paycheck, you could have done the same (in fact, better) with a bit of resolve and a bank account.
78% of American workers live pay cheque to pay cheque. I would suggest that of the two possible hypotheses, the one where the system itself doesn't let them do anything else, might be the one more worth examining than the one that betrays a complete lack of empathy with your fellow citizens.
This is not true. 78% of _American_ workers live paycheck to paycheck.