If propaganda was illegal, who would decide what was propaganda and what was simply argumentation made from positions of relative ignorance?

the greatest travesty of modern science is that fraud is not illegal.

in every other industry that i can imagine, purposely committing fraud has been made illegal. this is not the case in modern science, and in my opinion the primary driver of things like the replication crisis and the root of all the other problems plaguing academia at the moment.

What, specifically?

Industry funded research? Results that disagree with the current consensus? Nutrition science entirely?