They have enough people to block every possible route and not have to move anyone , that was the point . They were showing off the numbers advantage . Though Simon ' s group or Simon at least at the very least moved twice to the road block with the trees and to where they were going . On a side note , I always wondered why the group didn ' t just fight their way through Simon ' s barricade . That was the smallest barricade and they could have easily dealt with those Saviors , then pushed forward to Hilltop without any interference . From my understanding of it , Simon ' s group was the one keeping eyes on the RV hence why he was there at the tree roadblock and the endpoint , so without them the other groups would have no idea where the RV was at a given point .