I know opinions differ on this, but the fact that we have a SCOTUS, who is the ultimate arbiter of all things constitutional, means you’re going to have courts with varying degrees of flexibility on the issues they rule on, depending on the collective judicial philosophies of the members over time. That may not align with your philosophy, but I believe that was the framer’s intent.
From what I’ve observed, people label rulings they disagree with as “judicial activism,” and I don’t put much credence in that, regardless of which side of the aisle is doing the whining. These are almost always lay people.