If Winn can understand scientific articles, he should digest this regarding the development of the polio vaccine using inactivated and attenuated polio viruses.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3782271/
Pretty scary shit, but cutting edge of science at the time.
We now have much better knowledge of viruses at the molecular level, gene sequencing, PCR,etc. that didn't exist in those days. You are incorrect, the covid vaccine was not "rushed". The approval process was "rushed/expedited" at ex-president Trump's directive, so I give HIM credit there. The science underlying the covid vaccine is solid and lays a foundation for future applications.
I presume that if ex-president Trump and his advisors had disagreed, they would not have endorsed Warp Speed.