If orders like this are not overturned by the judicial system, then yes, it would be. But this order (or at least the lawyer-banning aspect) will be overturned because the US is not a totalitarian state.

Yes, the entire state apparatus bows to the whims of one man, which is almost definitionally a totalitarian state. We’re lucky, at the moment, that the totalitarian in charge has few concrete ideas and lacks the attention span to see through even those few.