The latter, but it's always been the latter. But usually they've been better at using the former to hide the latter. Recently, there's been a much thinner veneer of "legal principles".
In cases like Vidal v. Elster, United States v. Rahimi, and Samia v. United States I think you'll see the justices straining to understand how how square originalism against the modern world, and having to turn to another justification, traditionalism, which feels more like a "I believe this to be true, due to my political lenses" than perhaps some originalist justices in the past.
That said, I personally find originalism to be pretty conservative already (lowercase c again), and kind of silly, but the recent justice appointments are dialling it up more and more.