Dan McLaughlin at Red State had this to say about the specific criticism of good faith in the Halbig decision:
No, The Good Faith Of The Lawsuit Doesn’t Matter: One of the stranger arguments made against Halbig, not only by non-lawyers who don’t know any better but even in the opening lines of Judge Edwards’ dissent, is that the lawsuit is somehow illegitimate because the people filing it are not really trying to help the ACA, but are foes of the statute. Here’s a little secret: people who file lawsuits against federal laws are not usually big fans of those laws. Do you think the Guantanamo detainees who challenged the Military Commissions Act were really just disinterested scholars motivated by a concern for proper functioning of the military justice system? It’s the job of courts to determine the meaning of laws, not the motives of litigants.