Re uncensorable currency: Sure, I wrote a post about this being an actual thing for some people some of the time: https://medium.com/bloated-mvp/cryptocurrencies-make-sense-as-uncensorable-mediums-of-exchange-74777752dcac

Re uncensorable posts: If your writing is too hot for any web hosting / blogging / social media platform, you can already go to Tor to host it more uncensorably. Do you or Joe Rogan use Tor right now for anything except buying drugs or looking at illegal types of porn? I doubt it. So nothing is going to change if/when blockchain supports the same function that Tor already does.