Well, there is the small matter of a number of right-wing politicians in the US using musician's works without permission, not to mention those musicians not agreeing with said politician's extremist views.

What's particularly funny is when that extremist politician is too stupid to understand the meaning of the song they're playing. I think the most famous example would be a certain somebody who kept playing Fortunate Son at his rallies, both him and the crowd oblivious to the fact that nearly every verse's criticism directly applies to him. A rich kid who got out of serving in Vietnam, cheated on his taxes at every opportunity, and is screaming about how great the country is while vilifying a demographic that has always been one of the strengths of our society.

I'd say that "respecting the property rights of the creative class" is very much indeed a 'left wing' perspective, too. Not just on a moral issue of "stealing their work is wrong" but also because artists very often mock or satirize right-wing personalities and platforms - punching up. Right wing artists tend to just punch down at society's weakest.

simple, political stances do not exist in a vacuum. the same position taken in different contexts can be both "right wing" and "left wing". it depends on who's interests are being served. in this particular case, the being anti-IP serves the ruling billionaire class and is therefore a right wing position.