To suggest that scientists would never misrepresent their work because "science!" is naive at best.
Scientists are human. They are not above human motivations - both good and bad - related to their work, their stature, and their jobs. Funding can be based on certain results. Getting published can be based on certain results.
This is why making experiments and studies that are reproducible is so important.
Reproducibility is important, but not to check that what a scientist says about their own work is accurate. To verify the accuracy of what a scientist says about their own work you merely have to read their work.
That said, however, I am actually saying that it's unlikely that a scientist would misrepresent their own published findings. Perhaps it may occur - but if that happened then the government of the day could discipline the scientist who misrepresented their work. They would have to prove it.
What I find more naive is that a media relations person, employed by the government to portray them in the best light, would not misrepresent the work of the scientist.
Who would you want the reporter to speak to: the person employed to protect the reputation of the government of the day, or the scientist who did the actual work?
Let's say you're worried that a scientist might misrepresent their work. So you force them to communicate through a PR staff person. Now you have 2 people who might misrepresent the work.
Scientists are human. They are not above human motivations - both good and bad - related to their work, their stature, and their jobs. Funding can be based on certain results. Getting published can be based on certain results.
This is why making experiments and studies that are reproducible is so important.