Earlier quoted context omitted.
A lot of people turn to jobs like Uber because they can't easily find a job. There are many people who desperately try for weeks or months to find employment. Companies like Uber love to prey on such people.
I don't really understand this argument. Uber didn't create the conditions causing these people not to be able to find better jobs. If Uber stopped "preying on" these people, would they be better off? It seems like they'd just be unemployed.
Uber didn't necessarily create the conditions, but it does knowingly exploit them. That kind exploitation is not value neutral and can be wrong.