It's never been true.

The layer 2 and 3 of ISO/OSI stack does indeed "route around censorship". But the Internet as we know it is all Layer 7, and it's as centralized as it gets.

That's why regulators often aim straight at Layer 7 entities - companies providing consumer services over the web. Because no matter how unblockable the route between you and some server is, it doesn't mean anything when the server itself is refusing to talk to you.