I don’t doubt that there is subject matter that is best taught and learned in a didactic, unilateral way: professor talks, student listens.
But I do not think that theology is best taught this way. Theology is inherently personal. Students of theology aren’t just having what they think challenged. They’re having what they believe challenged.
Theology is too personal a subject to be taught via lecture. Students need to be able to ask questions, talk it through, and express their doubts.
In short, theology shouldn’t be treated like other academic subjects. It’s unique, and should be taught uniquely. Indeed, theology should be taught by methods that are inherently theological, and I think that there’s a strong case to be made that a conversation is more Christlike than a lecture.