The Chinese already do that with regards to ‘winnie the pooh’ in reference to their leader (and when that was blocked, further obscure poetic language).

I think the govt. is happy with this change, because it dramatically slows down communication rates if people have to have built-in encryption/decryption parsing in their speech.

Also, if you accidentally inform a government agent of the code, so to say, you disappear and the in-group has to change their coding language again.