You did miss the point. Read the article. It's about how all IP is not the same because they originated from different places and they do different things. For example, software uses patents. That's not just a niche, that's an entire category of IP. Copyright is also an entire category that artists use to "protect" their work. But what kind of protection? It's different between patent and copyright, so just saying I have IP rights, is as vague as you can possible be because you don't have them all - just some.