[jljljl]

Direct File was rolled out gradually as a pilot program. It was also only available for taxpayers in 12 states.

My guess: since the tax code is so complicated, they probably wanted to support the simplest and most common filing cases in the first release. Handling all the edge cases would delay the launch, and prevent them from collecting feedback. If the feedback and demand was positive for v1, they could expand the surface area in the future.

Unfortunately, it didn't last long enough