To be fair, that's just the brain worm talking.
He sounds seriously deranged. He basically promises to declare vaccines as dangerous; as something you should only use at your own risk. [I'm assuming than not even RFK will actually ban vaccines outright].
That means vaccination rates will drop significantly. After all, if the man responsible for health in the USA says vaccines are dangerous then surely he knows? True damage will not be seen until 20–30 years later, when the death toll of easily preventable infectious diseases is persistent and impossible to eliminate.
This vaccine denialism will create a situation that will disfavour lower intelligence. So in the long run RFK is actually doing an eugenics programme to make the USA wiser by killing his own followers first!