The federal government doesn't always know if you've had a child or if you've died. Not even specifically the IRS, but its possible for you to have a child and never involve any organization that reports to the federal government.
It is absolutely possible, just as there are tons of other exceptions that Direct File wouldn't cover. The point is that there's a golden happy path that many people trot along where things could just be easy.
The federal government doesn't always know if you've had a child or if you've died. Not even specifically the IRS, but its possible for you to have a child and never involve any organization that reports to the federal government.
It is absolutely possible, just as there are tons of other exceptions that Direct File wouldn't cover. The point is that there's a golden happy path that many people trot along where things could just be easy.