No, it's market forces. If the world was overflowing with employment opportunities, then unskilled labor would leave unpleasant jobs, and employers would have to pay them as much as it takes for someone to put up with the unpleasantness.
It could be people prefer working at a desk and a screen in an air conditioned office to, say, schlepping boxes in a warehouse.
And judging from the article, agencies hiring content moderators are going to do more to paint the work more colourful and being a career-builder, by outright lying about what contractors will actually do day-to-day.
Of course that’s going to look more attractive at face-value than being pitched a warehouse job by the foreman.