The volume of the escalator is reduced by greater than half, and the departure rate is a function of density, so reserving half of the escalator for people who

The volume of the escalator is reduced by greater than half, and the departure rate is a function of density, so reserving half of the escalator for people who want to depart slightly faster than others (in single file, with space) apparently doesn't overtake what a single, densely packed transit could carry. The problem is that people who want to walk are limited in reality by how quickly the slowest person ahead of them is traveling as well as conventions that make it unlikely that people would get within 1 full step of the person in front of them, reducing the lane's volume to 1/3 (the step you're on plus the step you're taking + space) of the possible occupancy of the standing lane. So I could definitely see that assertion being true.