I don't think that's entirely correct. If you haven't yet filed for 2019 or are not required to file you can use the non-filers tool on irs.gov, or here on TT, freefillableforms.com, or H & R Block. There you can enter your direct deposit info and receive your stimulus to your bank account, or wait for a paper check. If you receive SSI and/or SSDI and don't have dependents under 17 you are automatically eligible and will receive your payment from the Treasury, not SSA, the same way you receive your monthly benefits without having to do anything.
