Individual instances can be found, and errors do happen. However the idea that the biggest pharma companies, integrated by incredibly talented and hardworking people, and every safety institution (The american FDA, the EU security council etc) are all so compromised as to miss real problems and purposefully endanger the population is in my humble opinion absurd.
What is the societal advantage on letting a baker share his uninformed opinion on epidemiology? Why let software engineers discuss the safety standards of the medical field? A ton of the situations and problems are heavily skewed to high technical knowledge of narrow field.
I have no idea about how many volunteers are a good number to run a vaccine experiment, I have no idea what a good control group vaccine looks like or why use HepB and not measles. Me sharing my opinions on this topic only pollutes the conversation when I do not have the background knowledge to form an opinion on it.
If you look for information on this topics it would be much better for society if my blog is not there and there is information from actual doctors and epidemiologists talking about it.
Second, as any right free speech comes with certain responsibilities. My point is education people in using their right appropriately.
Lets get all Spiderman, great power comes great responsability. The right to free speech comes with the responsability to know when to shut up. Letting professionals speak and have the floor during events that concern their domain knowledge is a basic pre-requisite for the good ideas to flourish.