Direct payments to consumers is a 100% loss on those funds. Buying Walmart (or other corporate debt) means the Fed gets the money back when those firms pay down that debt. So very very different.
But the point of this subthread remains; corporate loans are expected to be paid back (less some loss reserve, but plus some credit spread), whilst direct payments to individuals are not.
[Edit: should speak of corporate bonds, not loans, for precision. There is a big difference though for this thread it's minor.]