The problem is when people claim they were never going to buy an awful lot of content. If someone spends a significant amount of time playing, or consuming, pirated content, I call bullshit. They would have bought at least some of it if they weren’t getting so much stuff for free. Considering the rewards and lack of consequences, I doubt the vast majority of people pirating are being really honest with themselves about what they “would never have” paid for, and instead use it as a simple excuse for bad behavior.
And rejecting a service you don’t consider worth it isn’t moral. That’s just basic capitalism and self-interest. That’s the standard decision to not buy something, which is a decision people make literally dozens of times when they go in the store. And pirating that content anyways certainly doesn’t make it any more moral.