The internet would be terrifyingly easy to shut down. Point blank. For the truly technical and nerdy, maybe we could return to a Usenet situation but for the overwhelming majority of people (and it is the size of the user base that gives the internet (and supposedly crypto) its power - network effects) all it would take is shutting down ISPs, which historically are extremely compliant with legal action. Just try torrenting something and you’ll quickly realize how little your ISP cares about the “free and open internet.”
Also, I don’t see how Turkey’s ban is “silly” in anyway. Crypto is banned there. That will deter the vast majority of people seeking to use it. The ones who manage to weasel around using arcane technical methods will find themselves in an empty room - what’s the use of owning crypto if no one accepts it?