Will that finally convince you?
Heh... Of course not. Is there anything written about theft? The only "theft" I found was in titles in references. Since you like it to be called that way doesn't mean it's theft, let alone legally be called that way.
You can bring me an example of someone who downloaded copyrighted material illegally being charged for theft. Theft is just a wrong word in case of illegal sharing. If someone takes your copyrighted material and presents it to be his, then it can be called theft, they stole an idea, something you worked on. But watching or listening that idea is not called theft.