Any intelligent, well-versed individual who understands how clinical trials would work would absolutely understand the ethics of vaccine clinical trials. It is impossible to set up an ethical trial that deprives half of the participants from receiving a life saving vaccine. No Institutional Review Board would approve it. The FDA would not approve it. And the 95% of parents who do vaccinate would be appalled.
The ethics of the medical world will not be (and should rightfully not be) adjusted (ie LOWERED) to the immorality of the antivaccination cult.