You are not wrong, this is in part good old fashioned moral panic. It's more than that though... Old media likes to attack "screens" because they are an existe

You are not wrong, this is in part good old fashioned moral panic. It's more than that though... Old media likes to attack "screens" because they are an existential threat to their business model and monopoly on narrative creation. They certainly are using the "think of the children" angle but the reason they're attacking the medium and not the message is because the medium itself levels the playing field and takes the power from their hands.