I don't think anyone is arguing they don't have that right. And moving on to a new product is precisely what the author has done, so that's a bit of an obvious

I don't think anyone is arguing they don't have that right. And moving on to a new product is precisely what the author has done, so that's a bit of an obvious statement. The idea here is a visibility: "Check your Disqus implementations because they've changed." It's like when I tell people about the creepy shit Facebook does. I always tell them, "if this is a fair deal for you, great! Just know what you're getting into."