For your reading pleasure:
From the site:
Substratum is an open-source network that allows anyone to allocate spare computing resources to make the internet a free and fair place for the entire world.
Consensus is that a decentralized network is better harnessed against fake news and censorship. I do think this is true, but I am absolutely not convinced that solutions like substratum (based on blockchain technology) are the answer.
Sometimes you post something that you did not intend to post or just made an error. (even a typing error). As soon you base your system on blockchain, it will be impossible to ever change (or delete) whatever you have posted. I am not sure this should be the way to deal with censorship.