Uber, Airbnb (and more of those modern "community feel good" services) are a slap in the face to all the workers who fought for workers rights and unions.
I used Uber a bunch while I was traveling around Southeast Asia. There were also times I had to take taxis. The taxis would routinely try to rip me off, refuse to run the meters, inflate the price at the destination and threaten to bring in police if I didn't pay the new amount that was 2-3 times the agreed upon rate. When running the meters, the taxis would routinely take long, roundabout routes to inflate the fare. And in cities without Uber, taxi fares were routinely as much as 5 times higher than in cities with Uber.
Meanwhile, Uber would tell me, in advance, the price I would pay, have a car show up without me having to flag it down and the drivers would use GPS to take me exactly where I wanted to go as fast a possible.
People like to focus on how Uber is exploiting their drivers and charging below-cost prices, but they ignore all the other ways that Uber is better than the taxi industry and all the ways that the taxi industry has needed to change for a long time now. I can respect Stallman's opinion, but when Uber is not only the cheaper option but also the safer option, I'm not going to choose to compromise my safety to make a principled point.
For example, you can have an interesting argument about minimum wages. You can have a different interesting argument about workplace safety standards. But you can't have an interesting argument about both of them at once.