Well, the guy who was interviewed expressed his preference for the type of work offered by big monoculture farms.

I think a lot of people are happy with that kind of work, because it's so much better than the alternatives they had back in their native lands. And they're too busy just getting by to think about what even-better options might be available. Even if they have considered that it might be nice to have better options at home, or to be able to settle down and become integrated citizens here, they mostly don't have a frame of reference for thinking about what public policies might help with that, or how to go about influencing policy.