It's not just judges. Presidents do it. Congress does it. Hell, they all do it. The so-called hero of the SCOTUS, Scalia, is absolutely off his rocker when it comes to the Commerce Clause. I think Clarence Thomas, nominated by the one term tax raiser, is the closest thing in all of DC to an actual Constitutionalist. But I'm probably mistaken there. He's probably soiled as well. They all are.
And, I agree with you 100% about Thomas being the closest thing to a Constitutionalist (especially on the commerce clause).