"Exploitation rights meaning the right to exploit the source material (and the title), the meaning of "exploit" being "to make full use of and derive benefit from" without any negative implication. "
"As I recall, the advance he got was gargantuan, and he got not only an obscene % of the gross (as I recall, 9%), but also a percentage on the net."
The more commonly used and understood definition of exploit is: "to use selfishly for one's own ends" also "to use (someone or something) in a way that helps you unfairly". Your characterization of his advance as obscene would seem to make your comment about using the word "exploit" with no negative implication intended seem disingenuous at best.
Look, I know your usual technique in dealing with anyone who disagrees with you is to suffocate them with words but it's not working here. Perhaps stating that you "understand how the comment could be viewed negatively but that's not what you meant" might have allowed some room to believe you but saying "I cannot fathom how that can be viewed as tasteless." makes you either a very poor BS artist or the world's biggest tool.