The idea of "choice" is significantly more complex than you present it to be, particularly within the context of people providing for themselves and their families, and the information asymmetry Uber leverages in order to convince people to work for them.
So what, some people have urgent needs, different parties in economic transactions have access to different information. Welcome to the free market. They're still choosing to work for Uber. No one is forcing them. Uber isn't forcing them. Uber is just offering an opportunity that they are deciding to accept.
