But none of that is actually what Linus has said in the interview.
He says he gets mad when people see software choice as an ethical choice. He doesn't say that he gets mad when people take it too far, or are too abrasive, or too inflexible.
"Trying to push any particular license as "the ethical choice" just makes me mad. Really."
The implication of this is that he doesn't see any significant ethical issues concerning software and copyright that free software. And he's mad that people believe that it is a question of ethics, and mad that people advocate.