For traditional publishing there is at least one person that is ultimately responsible for publishing it. The person is in the vast majority of cases subject to the same jurisdiction.

On YouTube, Facebook, Instagram, etc. I can push my agenda worldwide. Russia, China, Iran, and other non-democracies can make insane amounts of propaganda for very cheap to reach millions of people. The engagement algorithms even help the propagandists reach their target audience effectively. The algorithms help then widen the audience automatically through shares of their supporters and further engagement.