That is what GP was saying: it is extremely likely that the difficulty level of the scenarios increased. I wonder if the flattened curve of progress in the met

That is what GP was saying: it is extremely likely that the difficulty level of the scenarios increased. I wonder if the flattened curve of progress in the metric described by the article (disengagement rate) is actually intentional. Maybe a decision was made to increase difficulty of driving scenarios in such a way to keep that approximately constant.