movement of the nomad comes from somewhere. typically, and most destructively it comes from the failings of food production -> labor shortage of a city. there were of course nomadic forms before cities but this movement was to follow hunting patterns, or put another way a systemic failing of again food production (just because there had never been a successful food production system before that point doesn't negate that)
there is some amount of aesthetic posturing going on here. defining problems based on how they manifest rather than their cause. the manifestation of movement isn't the problem. it may be that it is the object of focus by the powers that be (because they like both 13 and 14 are fixated on the manifestations rather than their root motivators) but then it becomes clear that a successful resistance to this can not manifest in that same way.
if they are looking for movement and speed, be slow.