The point is “voluntarily” is more nuanced than merely people agreeing to it.

Sure. I can agree to that. But in this case, there’s really no nuance.

What’s really “unintelligible” here is claiming it is theft when they voluntarily enter into the agreement where they don’t get paid for their music (spotify), but it’s not theft when they are involuntarily put into a position where they aren’t getting paid for their music (piracy).

I actually find it kind of funny to read someone defending piracy while at the same time trying to attack Spotify as a thief for this policy.