Is it a crime to put your life into creating something, marketing it extremely well, attracting a ton of avid fans/users, and deciding that he or she doesn't want others undercutting the price?
Is it moral to make money from other people's work against both their wishes and the terms of their license?
In the end, it's the laws of the land that you're in that matters. As far as I know, I don't believe that these arguments on what is a derivative work are anything more than opinion. Settled cases are not equivalent to legal precedent.
The best thing that could happen for everyone involved is that it goes to trial and ends with a judgement, and then all this posturing and pontificating will hopefully come to a merciful end.