This is true for literally all unskilled labor. Most such workers are aware that it's only a matter of time before technology makes them obsolete. The older one

This is true for literally all unskilled labor. Most such workers are aware that it's only a matter of time before technology makes them obsolete. The older ones may be able to ride the wave until they retire, but those who are in their 30s and early 40s are in for a rude awakening within the next ten years or so.