A great lot of folk think so. The confessional Lutherans think we are rationalist for our Christology. They and some evangelicals, some liberals, most Amyraldians and most Arminians think we are rationalist for our doctrine of predestination. It has long been held that Reformed theology begins with an a priori (central dogma) doctrine of God from which they, it is claimed, deduced a system theology. In short, it is alleged that Reformed theology is more or less made up out of the human imagination.
Whether it is Pete Enns’ book or the several other volumes that are raising the question, after a 20 year hiatus, it appears that the doctrine of Scripture is back on the table. Andy McGowan has a new volume out on Scripture that suggests that Reformed theology did to the doctrine of Scripture what we’ve often been accused of doing with the doctrine of God.