Your right to say (post) stuff ends when you violate the rights of others. Posting material that isn't yours to make a profit - which is what's occurring on Steemit and D-Tube - is LITERALLY reaping profits that don't belong to you which is a violation of someone's property rights. Just because it happens to be in the form of 1's and 0's and in text doesn't change that. As such, you forfeit your right to have an account.
RE: We Need to Talk About Plagiarism and Piracy on Steemit, D-Tube and View.ly