My US House rep Rob Woodall had breakfast with Scalia some months ago and he told us in a townhall that Scalia said the court was growing weary of doing Congress’ job for them.
I wouldn't expect you to know what case(s) Scalia was referring to when he made the remark, but I don't think he was referring to the pendant case which is the subject of this thread.
The current ObamaCare case is NOT about the Court legislating, it's about the Court interpreting the Obamacare statute, specifically deciding the issue of whether it gives the federal government the power to fund subsidies for ObamaCare policies not purchased through state exchanges. The text of the statute, as far as I'm aware, does not provide for such subsidies, yet the Obama Administration is subsidizing nonetheless.