The site is not without censorship. It is censorship resistant. There is a difference. Actors in the system can still decide to censor anything they want, but they are limited in their effect by their stake. The point is, censorship cannot happen from a centralised governing authority which blanket covers the entire platform. (Steemit Inc have the power to almost act this way through their enormous stake but have so far built some trust by not abusing this power too much)