In fairness Lizzie and Sam never agreed that they had appropriated the work of others and then marked it:

""sam-and-lizzie
All Rights Reserved"

They just avoided the question. As Lizzie has just done again.
And be careful of using the term "folk police". When I queried it once before, Lizzie wrote a whole page about me on Myspace. I complained. It was taken down. Shame in one sense. It was making me a lot of friends.