I find it unclear just what DID happen. She "danced" (sounds like with her clothes on) for a couple hours before stripping:
"Cassandra Joyce Park, 29, who police say used the stage name "Sassy," danced for a few hours before "the guys" took up a collection and paid her $150 more to fully disrobe, Landon's mother said."
She went into another room for the "adult" show although at least one minor (the photographer) went into the room.
It is what went on in that room that is the basis for the charge. Yet he could go to nudist summer camp without his parents and not face a "minimum age".
No he is not permitted to buy Playboy, but the American Library Association will let him thumb through it all day long (and his little brother) without any chages against the librarians. The ALA's position is that there is no such thing as age appropriate material and that kids should have access to everything in a library (including "adults only" materials).
Not all parents use good judgement, as for the stripper, did they indict her also?
That bugs me, too. Although where you have a community that takes an active interest in what's going on in their local library, a library will make certain restrictions such as not letting children check out adult materials, or will put some items in a locked bookcase.