Why is it bad to use an unauthorized copy of a proprietary program? Because it's proprietary! So an unauthorized copy is almost as nasty as an authorized copy of the same program. They are both nasty because they are proprietary. The users don't have control over them. If they pay developer – that makes it worse, because they are rewarding this delinquency. That's why the authorized copy is worse. But they are both bad because they are both proprietary software. If you want freedom, you have to get rid of them both, because they both control you.