Look, this is a shitty thing, but what exactly is Biden supposed to do here?
He can't fire SCOTUS. If he issues an executive order to counter this it will get litigated. He can work with Congress to try to get a law written, but since we don't have both houses, that's not likely to happen.
The president single-handedly cannot do anything. In this case, the courts have to do it, and the far right dominated SCOTUS decided to do nothing. All Biden could do is appoint liberal judges to the 5th circuit if there are any openings.