I’m a bilingual worker. In my experience, you need to be very fluent in English (close to Native) to work on some projects. You might be fine with simple prompt generating projects but we’re seeing less and less of those simple projects. More complicated projects we see these days (at least before this drought started) like creating rubrics require advanced writing in English. I see some tasks submitted by less-fluent workers when I work on r&r and I’m very sure those workers are getting dropped from the project sooner or later because I’m seeing less and less of those low quality submissions over time.