I believe that a lot of money counted as part of the debt was money robbed from the ‘Social Security Trust Fund’ which is of course empty thanks to Congress.
Perhaps you will never need to collect SS but statistically that is unlikely.
I doubt that people with empty bank accounts will be in large numbers, in accord with your position stated
Social Security will always be paid. What might happen is eligibility rules might change or COLAs might disappear. But it's just good economic sense to distribute that money which will be almost 100% spent by recipients.
What people should be worried, really worried, about is that pensions have all but disappeared and savings for retirement are accruing next to no interest. It's going to make a higher percentage of retirees in the future totally dependent on Social Security.