Conceptually, it's pretty clear: For the single person that needs (or wants) its Uber income, the law is good because they get their income as before. However, it's only good because the whole system is bad (e.g. that labor has no power in the US). So the question whether the law is "good" is rather the question: What's the alternative? For as long as there's no alternative for Uber etc., the law is good. If there were alternatives (e.g. jobs that have benefits), it would be the worst. To sum it up: Poor people in America have no choice. The system is bad. You have to take what you get (e.g. a Uber Job) and be happy for it.

As an aside: all these anecdotes about people using Uber as a sidejob and enjoying it are missing the point: Uber might be a good sidejob for you/your friends but that's only because either they don't get a fulltime job or their fulltime job doesnt pay enough. They don't do it because they want to, they do it because they need to.