I think Tom Sticht was right. What we do see in the great majority of classes is traditional school being adapted somewhat to an adult clientele. Seldom is it learner to learner, as it would be in authentic dialog.
Learners expect traditional school.
W have cases where learners sanctioned teachers when they deviated. By virtue of training and experience, teachers are comfortable with traditional school instruction. So it's only natural that teaching is based on traditional school models. Yes, we need better staff development. There must be a better way.