It has been asserted that Steem is censorship resistant as it's based on an immutable blockchain - but does that hold water?
Please do have a look at https://github.com/steemit/steem/blob/master/LICENSE.md ... there is one big point of centralization there. Steemit, Inc is defining what is the valid blockchain, no other forks allowed, software is not free to reuse on other blockchain projects.
Steemit, Inc is under US jurisdiction, meaning that if the US government says "jump" ... (well, I suppose a court order would be needed) ... then Steemit, Inc has to jump. They do have the power to censor content through a hard fork of the blockchain. Those sticking their guns to "freedom of speech" will not have the juridical right to do a "steem uncensored" hard fork.