I think it should be legal, yes, if that's all you mean by condoning. Nobody should use force or coercion to stop me. You're still free to socially stigmatize me. I think cheating on your spouse shouldn't be criminal but it's still immoral and unethical. I hope you understand now.
If you were under any other impression, it was a mistake on your part, one that I've corrected for you.
No, I understood what you meant by incompatible with libertarianism, I enjoy discussion and other peoples' point of view. I once considered myself a libertarian.
Let me say that I consider it initiation of force to take property which belongs to someone else and using force to prevent it would be justified.
I've seen the result of intellectual property theft and I don't like it. The market adjusts and less people spend time creating things that are easy to copy, so the quality of those things are diminished.