I know very little about cars, televisions, cellular phones, photocopiers, vacuum cleaners, etc. My body is only one of the things I don't know how to repair. How do I know how to hire people for those things? If not being an expert in something opens the door for government control then we need the government to control just about everything.
All of the things you mentioned do have government regulation.
You seem to imply that judging this data is trivial. Get some bunnies, some nearly dead people. Go to it. Did you miss that we discovered a complete lack of utility and a small number of fatalities in a therapy which there was already an existing body of evidence that said otherwise?
Would it surprise you that there is considerable analysis that is done AFTER the drug companies are done with the bunnies and near-corpses?
Aside: Also you have no answer to what happens to issues for which there are no nearly-dead people available.