Not true. Only 2 SC Justices were asked to comment. And among equal branches of government, SC Justices are free to give remarks on matters not formally before the Court.
>> And among equal branches of government, SC Justices are free to give remarks on matters not formally before the Court. <<
Not exaaaaaaactly. They can comment on judicial philosophy or news or whether the Redskins will ever make it to the playoffs, but they will not comment on matters that are plausibly about to be before the court, either. This would seem likely to be among such matters.