It's a different kind of demanding, more like being a commercial writer, probably more open to people who are damn good commercial writers and happen to be working as a picker in an Amazon warehouse. It'd be like getting paid as a picker but being paid to have breaks and worker rights.
I don't think it's illegal to do this, but it is as manipulative as it's possible to be. Therefore that's probably just what's happening there: if you can write and shill effectively on Twitter there's a chance that you get to do that and pretend to yourself that it's a break or rest period.
Very Amazonian.