The problems of 2008 were never cured. The Federal Reserve's solution to the crisis was to lend the economy enough money to borrow its way out of debt. It thought that if it could subsidize banks lending homeowners enough money to buy houses from people who are defaulting, then the bank balance sheets would end up okay.
When economists speak of money, they neglect that all money and credit is debt. That is the essence of bookkeeping and accounting. There are always two sides to the balance sheet. And one party’s money or savings is another party