Your whole argument rests on the unspoken and incorrect premise that such laws aren't open to challenge, when in fact they have been challenged and litigated extensively and you're only looking at the statutory side.
This seems to be a common error among hackers who assume that statute = law and don't consider the history of how courts have interpreted and circumscribed statutes over the years. Of course, this is also a structural problem in our legal system which makes it quite difficult to ascertain what the actual operational parameters are without spending a lot of time in a law library or its digital equivalent. Much of what lawyers are paid for is their knowledge of how to trace and apply that history to new fact patterns.
Girls Lean Back Everywhere by Edward de Grazia is widely considered the best single work on the law of obscenity, although it's heavily focused on sexuality and pornography and may seem somewhat dated by today's standards.
