Propaganda doesn't totally rob people of agency free will (more accurate term), if it did this site wouldn't exist. People do have the capacity to develop critical thinking, skepticism, and a basic curiosity about the world that allow them to develop some resistance to propaganda.
You can hold people accountable for failing to even attempt to do this.
Us, we, the politically minded internet dwellers and the pmc/lanyard/neoliberal/boomer/chud/right wing psycho internet people are both hyper-aware of media. We're also hyper-aware of one another. We all tend to over-emphasize the importance of media (and therefore propaganda) in politics. That goes for traditional media like TV and new media like social media and podcasts.
Media has inserted itself as main method to know what's going on in the world for many people. That doesn't mean it's actually the only way or that it's the source of political action in the world.
Misinformation, data, propaganda, information, news, etc aren't as important to the way things are as it seems. It's not a battle between who gets to tell the story, it's the winners of the battle that get to tell the story and the winners are those who own the labor. There is demonstrable proof that illiterate, largely unread people can start and win a revolution. The question is whether that's true for the revolution to come. It'll be hard to say until it's over.