People don't have an obligation to uncritically pass on any and all messages. True.
That a publisher only publishes certain books is not censorship of all the other books. True.
That you promote your own views without simultaneously mentioning all other views is not censorship. True.
Freedom of speech means that you can put up your own lawn signs in your lawn. It doesn't mean that you get to put your lawn signs in other people's yards. It certainly doesn't mean that they are obligated to print and put up your signs in their yard. True.
These are all true, but irrelevant. Refusing to help spread a message is different than trying to stop other people help spread a message. I've been repeating this for a while now. If you're still confused, try rereading our discussion until you see the difference.