> I’m asking why all this fuss about the social media companies and not the video or causal game companies?

Because of the scale of the observed harm.

There is plenty of documented evidence of the harms of social media to otherwise non-mentally ill people, particularly with vulnerable demographics like adolescents and teenagers. At this point you're just playing dumb because you most likely work for big tech and are running interference. They aren't gonna give you a raise for it man, cut it out.