Like anything involving hundreds of millions of users, there's going to be good or bad effects. However I have been on the internet long enough to have concluded that the idea that local law has _no effect at all_ on websites is not good. Ultimately if they don't comply they would probably have to be blocked.
CNN is a very silly example though, because .. you can just go to the CNN website separately. The one that is blocked is Russia Today and various other enemy propaganda channels.