Photoshop requires experience and some talent, this doesn't. If I was some small rebel group in Africa or the Middle East with basically no money or training, I'd use this tool every single day until I was in power, or I'd frame my opposition as using it against the People.
Try and do that. Likely those people won't care too much about you, they lean towards authority figures in their community. It is way easier to find those guys and corrupt them. Rather than running some underground news agency changing minds of millions of people.
In fact quite often the former is the case + cheaper + less time to execute. "Western" societies will be more resilient to this scenario. So, mostly its gonna be a lot of "political" art we gonna see.
Everyone just got their own KGB art department.