I know that if I'm going to hire someone to head an agency of the government, the last thing I would do is hire someone who has worked in the field.
That's why we NEVER have military people serving in the Department of Defense. That's why we NEVER have lawyers writing our laws. That's why we NEVER have someone with a doctorate in environmental studies working at the EPA.
OF COURSE the people working for the FDA have a background in pharmaceuticals. That's who you HIRE for the job.
When the CDC was going to retract their recomandation for Gardisal,the HPV Vaccine due to the number of girls being paralyzed,and dieing,the director of the CDC Julia Gerbering blocked that retraction,and for her contribution to Merck,the manufacturer of Gardisal,they gave her JOB as HEAD of MERCK VACCINES,no goubt making more money then her government job.