Of course, it does not justify exploiting workers. Protecting people from those practices is one of the reasons we have governments composed of independent powers, and entire structures with the only purpose of keeping those honest. People aren't complaining about Uber because it looks like that on their case, those safeguards are working. (As an example, this article could only be written because the safeguards are working.)
And yeah, they were some courageous people that insisted on breaking some really immoral laws and destroying a really bad local actor. If it wasn't for them, city transportation would probably be the same it was at the 2000's. Of course, they did it for their own immoral motives, using bad practices that should be punished. It just looks like they will be punished, so why bother hating them? Just use a lower priced competitors that probably treats their drivers better, and forget them.