Oh geezuz.
As reported widely in the news media, with individuals whose bank information appears to have errors, the Treasury Department is instead mailing prepaid debit cards.
It might look like some sort of scam, but it's not.
I'm guessing the primitives whining about not getting theirs actually got one of those debit cards and threw it away, thinking it a scam.
Too bad. They can of course get a new card, but there's a lot of red tape involved. Too bad.