Really, the policing is very light touch. Just because you have to register, doesn't mean the information is used or checked. You don't have to register if your site is overseas, but then if the government doesn't like it they will block it for those without VPNs... but everyone has a VPN. People here talk plenty about politics, and always in the negative. It's just that publishing serious criticism is generally off-limits. Academics and motivated journalists can do it, but they know where the line is. Normal people don't, because they know it won't do any good. That, to my eyes, is more transparent.