content: Exit node domination is not enough to censor a hidden service on tor because exit nodes are not used for hidden services. This would require an exploit in the encrypting of the onions that give the onion router its name. The nodes don't know what each layer of the onion is and can't without a cryptographic exploit. Exit nodes know when you are using tor as a proxy to clearnet because this is unavoidable. NSA is not going to burn a crypto exploit to slow down the daily stormer.