The first thing that occurs to me is that I have never seen a book with 'Destroy after reading. Make other people buy their own copy' anywhere prominent on it.
The other thing is more a personal philosophy. If I ever recieve defective goods from a company my response is to inform them 1) that I regularly purchase their product 2)As a person with involvement in the Quality Assurance field I hope they don't mind if I make some comments.
I then point out the deficiencies and thank them for my chance to contribute.
This usually has quite beneficial results :-)
So in the case of Jessica Adams, I would purchase one of her books. I would also hope other members here would do the same, no matter how distasteful you found her comments. That way she might be more persuaded to the benefits of bookcrossing. It may not completely change her mind, but it could reduce her antipathy.
I'm not saying there are direct parallels between recieving dodgy merchandise and Ms Adams' attitude, but rather trying to express a general 'encourage rather than bully' philosophy.