Facebook is the new tobacco industry.
People worry about ai operating in software, this is an ai that has been running in the collective wetware of humans for some time that is significantly hindering us.
If researchers can produce a result that convinces the powers that be that facebook is a mental health issue they can produce a result that gaming or violent movies or maybe something you indulge is a mental health issue.
It's a great analogy because it also works well for adults: we're free to use the product/service, we have our freedom! Even if it slowly (or quickly) kills us.