I don't doubt some of this is optimization in the middle. But they (as with so many companies) have expressed interest in reducing the working force with AI and robotics too. Mechanical workers show up for work, don't have HR or other issues to deal with, and can work when you need them. I.e. cheaper in even the short run. Now with UPS being union there's going to be a bit of friction there, but they'll figure it out. Maybe give a bit more to the workers who are allowed to stay (which is good for them I suppose). Other companies that don't have that protection, well...there's other jobs, right?