Facebook needs them to be done for its business model to work.
You may have meant (surely did mean?) the latter, but I think the distinction is important.
None of these people need to be subjected to psychologically harmful material on an industrial scale. We could always just not let Facebook do that, and they'd have to live or die as a company without doing those things. Possibly it would mean broadcast-type social media couldn't exist anymore. If so, then the cost of keeping that seems to be hurting people with this kind of work. But it is something we could stop doing if we wanted to.
They do not need to be done.
Facebook needs them to be done for its business model to work.
You may have meant (surely did mean?) the latter, but I think the distinction is important.
None of these people need to be subjected to psychologically harmful material on an industrial scale. We could always just not let Facebook do that, and they'd have to live or die as a company without doing those things. Possibly it would mean broadcast-type social media couldn't exist anymore. If so, then the cost of keeping that seems to be hurting people with this kind of work. But it is something we could stop doing if we wanted to.