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.
Sorry, in my day-to-day Australian life, I repeatedly run into Soviet propaganda from 90 years ago and eventually fell for it. :(
How could Dan Andrews do this?