There's no such thing as bad publishing. If people don't like or want it, they won't consume it. Let people make their own choices about what to read or watch.
If ISIS propaganda can be decentralized and widely available, that means western propaganda (as well as western hard facts and reporting) are decentralized and widely available as well.
Unless you think that all ideologies are equally desirable to end users, this results in a net win for "your side".
People will find what suits them in the moment and go with that. We know that ISIS used the internet incredibly well to recruit with their propaganda, and it was exactly through things like YouTube that they build a large and international audience. So it’s not theory, it’s already happened. You can rely on just drowning out ideas, because the internet allows amplification for bad ideas to get more exposure than they naturally would otherwise.
If ISIS propaganda can be decentralized and widely available, that means western propaganda (as well as western hard facts and reporting) are decentralized and widely available as well.
Unless you think that all ideologies are equally desirable to end users, this results in a net win for "your side".