Yep -- workers other industries would utterly hate it. My own domain of journalism has had its own brushes with this sort of work dominated (and dictated) by algorithm: Everything from the content farms of the late 00s and early 10s (where writers were paid pennies to create junky posts on subjects picked by algorithms monitoring hot search terms on search engines) to the "pivot to video", i.e. five or six years ago when Facebook changed its newsfeed algorithm to promote video content -- and newspapers laid off swathes of print reporters to hire massive video production teams (which were themselves laid off a few years later when it emerged that nobody was clicking on the videos, because Facebook had lied about how engaging video was).

It's nowhere near as bad as what the delivery drivers have to deal with, but it's a taste of how rapidly labor conditions go south when software determines the marching orders ...