The e-filing excuse makes no sense. For one I have TurboTax for Desktop which supports paper filing. The form has been available since 1/29/2020 but TurboTax doesn't even allow me to enter the information in. Secondly, many other providers already have e-filing available. TurboTax clearly has not put a priority on having this form ready to go.
At this point I have sunk a lot of time into preparing everything within TurboTax. But I sure will not pay a premium for this product in the future with such lousy support.
