Your seatbelt analogy is flawed. Car manufacturers are held to account for safety failures far more rigorously than pharmaceutical companies (who in fact have ZERO accountability.)
Why is my analogy flawed? It is not always about accountability.
In situations with bad luck, a proper designed and well used seatbelt can kill - That's a fact.
I will still use a seatbelt all the time since I am convinced it will much rather save than kill me.
Big pharma has virtually no imperative to improve the safety and efficacy of vaccines...
I know that there are many black sheep in the pharma industry - just like there are whereever money is in play.
However you don't really thing that all scientist just do their work for money? Do you think all people working in those areas just care for money?
We can agree on the fact that we should get rid of the people who are there just for the money. But it's unfair to say that all people working there are just doing it for the money. And luckily, that's not the case!