I don't think that's accurate. It would be like saying "Apple rejecting applications that use buttons" because the apps being rejected have buttons. I'm not saying Apple is doing a good thing here, but the blog post states that it also happens for Google accounts and presumably any other web service where you'd sign up via a browser. Sending people to the site for that purpose if the service is potentially a pay one seems to be in violation of Apple's terms, though it's certainly a stretch. Apple should clarify things and not restrict browser use, but also the title is needlessly alarming.