Well, they maybe aren't forced to work for Uber/Lyft specifically, but they are forced to work for someone. I guess for most Uber/Lyft is preferable to other options, but that doesn't mean that Uber/Lyft aren't bad, it's just that other jobs are worse.

But I'm sure there's many who really only have Uber/Lyft as an option. They are forced to work for them. They need a 2nd job, and they need a job that provides the flexibility in schedule that Uber/Lyft does. There's really not any other options if that's what is needed.